DmdBT, dont do it. i have seen this before. often times 2 sticks of memory can both be good quality memory with nothing wrong with either. install either by itself puter works fine, put both in and bugs or probs. i had experimented with several combinatins in my machine and found that it ALWAYS runs faster and more reliably with a single stick. in fact it works better with a single 128 than it does with 2 matching sticks of 128, go figure. i now have a single cl2 256 stick in it. ive read on bbs sites that cater to win stuff that 98 can simply not utilise more than 128 mb of ram sounds like youve already got as much as you need. i sure wouldnt start playin the mix an match game again. refer to wht skuzzy sayin bout 98 memory managment