Nlite.. confusion?

[zerodayATK]

ok i thought this rig had MCE on it, its an hp ....so i made the back up disk and when i load it into nlite it says it xp pro... i looked at the system in control panel and it says MCE do i go with mce or pro .. bc i want to integrate the drivers for my vid card and a few other drivers ..and integrate sp2 but i dont want to integrate the wrong one.... or should it have sp2 on it all ready?

thanks, TYYk