Yeh, I get what people have been saying now, I'd sumhow been thinking my hard drive would be 300MB and therefore would fit onto a single CD, crazy I know but ive had a lot on, exam stress and all

, now that ive got that unrealistic idea out of me head, ive been thinking of alternatives. The main idea ive got involves having a spare, say 20 or 40GB hard drive and just backing up essential files, for example game saves, and then if the HD crashed all i'd lose would be school work

, or something like that. The only problem is that as the build is going to be incredibly expensive (for me anyway, for anyone who hasnt worked out im not a full time earner, im currently in the GCSE period of Yr 11, earing £5 a week pocket money

, hopin 2 get a job over summer hols though, the entire project relies on it) i wudn't be able to buy a new back up hard drive, and therefore my only alternatives would be to take either a 40GB hard drive from an old Time (read crap) computer, or take the 20GB hard drive from my current PC (read newer but crapper), these would be incredibly slow, not really a problem as they would only be back up drives, but I'd like to know whether they would slow down the PC for being connected. Again thanks for all your help, no I keep saying it but I dont want my first build to be a disastor and your advice should help me steer clear of that situation, also does anyone know where to buy an anti-static wrist band, I live in the UK if that affects anything but Ive heard there worth buying.