I did it! Thanks so much to all you guys (gals too?), especially MudCrab. It is wonderful that you guys not only know what you are doing, but that you also take the time to try and understand the cause of new guys problems. I have a step by step proceedure that results in dual booting win98\win311 fat16 on an old desktop. I will post the proceedure below once I type it up, not right away-- I have my computer back and will be busy installing aps (finally whew). I known win98\win311 is not of much interest, but I think I can figure out Vista\win98 on a new notebook now, which should apply to vista\XP and I read here there are still many problems with that. I'm pretty sure most these dual boot proceedures must start with 1)format C: 2)Install clean OS 3)Install DD. Unfortunately you will have to reinstall all your aps. The "proceedure" (not sure what to call it) in User's Guide 8.2.2 'Installing Windows on a seperate partition" will probably fail in most cases. In particular do not reboot from OSS just prior to installing the new OS.