I know you can start a process using this:
System.Diagnostics.Process.Start("Explorer.exe")
You can use this:
Dim myProcess As Process = Process.Start("Explorer.exe")
' yadahyadah
' yadahyadah
' yadahyadah
myProcess.CloseMainWindow
Or
Dim myProcessList As Process() = Process.GetProcessByName("Notepad")
Dim myProcess As Process
For Each myProcess In myProcessList
MyProcess.CloseMainWindow
MyProcess.Close
Next
Or
'Kill all running process of Word and Excel.
'This is done because of problems with concurrent running Office processes.
For Each processXP In processList
If processXP.ProcessName = "WINWORD" Or processXP.ProcessName = "EXCEL" Then
processXP.Kill()
End If
Next
Hope this helps