thanks loads. i got myself a new 40x12x48 cdrw drive and a 16x dvd rom drive today (exchanged my old drives) plus over £90 for my other hardware (processor, gfx card, ram). i backed everything up last nite. and stuck the winxp cd in, and ur right it was very straight forward. i just let the setup format my drive, and then left it at that, although i see now that it would hav been just as fine to follow ur recommendations earlier. now i hav my hdd, floppy, new cdrw and dvd drives all put in the new case, plus some new fans which i got today. hopefully all will go well, and ill get everything tommorow. i think im actually gonna print this page out as the advice has been so good, thanks again.
at the moment im on my good 'ol p2 233 with 32megs of ram, and ati shit arse rage gfx card

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one little question, do motherboards usually come with IDE cables as my computer exchange place stole my IDE cable that i accidently left on my old dvd/cdrw combo drive that i exchanged today (the bastards !!! ). if not ill hav to tear one sitting in the machine im on now.