Oh my, thank you all for the helpful replies!!! Hmmm... anyways, yeah, I intend to disable some of the hardware in Win 98se as the o/s will only be used for playing older games(very very old stuff released way back in late 80s to early 90s) which somehow, WinXP tends to dislike and reject. I could of course get an older pc but I just don't have the spare cash atm. I intend to dual boot both XP and 98. I can only hope that my motherboard will not give me any problems for now. It is being annoying by having problems from time to time like... even though the onboard lan and sound were disabled many times over by a few different hardware repair shops, the bios keeps enabling it again... grr. Oh well, I'll just live with it and disable in Windows. Originally, I intended to go unattended install for both XP and 98. Well, looks like I can't do that for XP. Ah well, we'll see. For now, my concerns are to ensure the hardware will work efficiently on 98 SE. And if I need to reinstall 98, I'd have to uninstall Win XP too, right?