I'm currently configuring my Dell Dimension 4100 to be able to run DOS games and see what I get. The OS I'm running is Windows 98SE with Service Pack 3.33 installed. The problem is that upper memory reserved is very limited especially when turning EMS on which I REALLY want. So, I've used the monochrome memory block, which is I=B000-B7FF, to get the least of the memory since it's never used at all on a machine like this. And with this, I can do DOS just fine, but Windows 98SE refuses to load normally (Was able to get into safe mode). I've tried other memory blocks, used HIGHSCAN, used FRAME=C800, and changed video cards, but to no avail. Any suggestions?