[ParkerF]

Alright, so after further investigation, testing, and conversing with a good friend of mine, I've found out a bit more.

The computer WILL boot with one stick in. I then switched the single stick with the other to make sure they were both good and not burnt out. Both work alone, but not together. I'm about to check and make sure the second RAM port on the mobo works, just for remedial reasons. At this point, I'm thinking any kind of information will be helpful.

One more note: The Fry's salesman got me to buy two single sticks separately in order to receive the rebates they were offering. I'm willing to bet that has something to do with the fact they don't work together.

Thanks for all the help guys and gal!
-Parker

P.S.- Second port works just fine. Also, my Vista is a 32bit version...Not what I thought. Oh, and yes, my Acer is a 5570Z.

P.S.S.- Oi, you said 5520Z. My is the 5570Z, not sure if you made a typo or not.