Built a new pc. 1G Athlon. 512/pc133 mem. 98SE. 20G/ata100 HD. Toshiba DVD/CD. Plextor CD writer. ATI All In Wonder Pro 128. Decided to add another stick of 256/pc133 since it’s so cheap, and I plan on doing some video editing. Installed fine, turned it on. System lists 768, so it’s seeing the new stick. But, machine runs like a turd. Media player putts along, and when I play a certain WMV file, it shuts down, requiring re-boot. Real Player won’t work either. Also, my Plextor starts eating CDr’s like crazy. So, remove the new stick of memory, and, boom, everything is back to normal, including my CD hungry Plextor. So, happen to get the latest PC World today. Amazing coincidence, they have an article on upgrading memory! They, in a trouble shooting sidebar, run my exact scenario. They conclude by saying 98SE is only designed for a max of 512 memory. They give a link to an article by Microsoft that gives a workaround to the problem. Run msconfig and go to advanced troubleshooting. I tried some of the suggestions, such as disabling ROM breakpoint, and raising max memory to 768. Seemed to work better after a re-start. The WMV file that killed it before worked fine, but it didn’t seem to work any faster. Plus, my Plextor had another CDr for lunch! So, the question, anyone successfully Run more than 512 memory in 98SE? How’d ya do it? Thanks in advance! Scott