I've managed it! I had to slipstream on an xp machine not a windows 7 machine as originally did! I needed to do it because when I used sp1 I got an irq_less_or_not_equal blue screen of death! Turns out it was a driver error after faffing with the ram. Sp2 and 3 must have an updated driver or correct driver as it installed flawlessly! I couldn't do it the other way as i was trying to install the OS.
On problem now is after 20min the computer shuts down, I'm assuming over heating at the moment!