I used to be under the impression that I needed PC100 SDRAM memory for my sawtooth... I just ordered some memory for my computer.. plugged it in ( upgraded to two 256 Sticks in addition to the the two that I had in there) to give me a Gig of memory. I pulled up the apple profiler and low and behold it says I got a Gig. When I clicked on the Memory however it inidicates that the two new sticks are PC133 Memory sticks... I didn't think I could use that in my computer... Do I need to return these sticks or will they work correctly seeing as how they are registering???? Anybody know????