Amanderthad,
Im running Pro Tools Le software with 128Meg of ram and LE software has a little bit more than free, It's hard for me to answer your question until I know what kind of computer you are running. I'm running a PC, 500MHz PIII overclocked to 633MHz, Delta 44 sound card, CDRW, CD, Zip, Floppy, 13Gig 10,000rpm, dedicated audio hard drive, and my computer never crashes, If you could forward that information someone here with Pro Tools experiance will help you.....
Peace
Carter