I have to run my computer into the shop soon(lightning took out my firewire formac studio and lacie cd burner as well as the ports it seems.) i just want to know what i need to backup when it comes to prefrences and applications. essentially i want to know what to back up so i can get my apps running again if the guy erases my hard drive for whatever reason (i think i'll need another motherboard). I have a dvd burner but no second hard drive.