Check if a program is runningTag(s): WinAPI/Registry

OleObject locator,service,props
String ls_query = &
 'select name , description from Win32_Process where name = "textpad.exe"'
int num, ret, i
locator = CREATE OleObject
ret = locator.ConnectToNewObject("WbemScripting.SWbemLocator");
service = locator.ConnectServer();
props = service.ExecQuery(ls_query);
num = props.count()

IF num > 0 THEN
 MessageBox("Process","textpad.exe is running")
 Messagebox("Process","textpad.exe is NOT running")
Before using this technique, you may need to download and install the WMI ActiveX, here the URL.

See this related howto