FORMAT the drive in ANOTHER machine....
Put windows 7 cd in drive and start machine, it will automatically boot from dvd drive as it wont see an OS on the hard drive...
All the best Brett
Totally right mate thankyou.
Just a note: Instead of formatting it on another machine I installed Linux and created a partition on the disk through that OS.
Then chucked windows in and it worked fine.
Thanks again dude.