Thanks Raze =) In the end I decided "bugger it" - 3 days 'til the end of the month and we had a few gig spare, I just downloaded it on steam (other games I was going to download this month can wait 'til next =))
I did try and put the install files in steam directories, but it didn't seem to want to recognise them at all, so I had to download the whole nearly 2 gig - was worth a try though!
Thanks again for all your help! =)
