Use the Win32 API called ShellExecute:
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_SHOW = 5
ShellExecute 0,"OPEN","gens.exe","gamename","C:\Path To gens.exe", SW_SHOW
Enjoy,
Chi Happens
They mostly come at night...mostly.