VB 6.0 - start the app

can anyone tell me , how can i start the microsoft application before the login screen of XP ? ? 

You hvae to use the Shell command


Dim t 
t=shell("Excel",1) 

thks for reply , but u didnt ubderstand my qustn ,
my doubt , is suppose  i want to start the "notepad.exe" before "administrator" user or "student" user logs in .. 
so how can i do it ?
the answer you have told me will only work when exe file of vb is run ,
so help me if u have any idea . . .