Hi there Nick
1 Shutdown your Mac
2 Switch it on, and hold OPTION
3 Choose "BootCamp" (the one with the image of the HD - not Macintosh HD)
4 This will boot you into Windows
5 Eject your Windows Install disc, and insert your Mac OS X Install disc
6 Install the Boot Camp drivers
7 Run an Apple Software Update from within Windows (Start -> Programs -> Apple Software Update)
Hope that helps
Taylor, I agree with steps 1 and 2, but I disagree with step 3.
It sounds like Nick is stuck in the Windows Installation Boot-loop.
My recomendation for step 3 is to choose OSX.
On a seperate, stable windows machine, I recomend slipstreaming drivers into the windows install.
When you install Windows via Bootcamp on Mac, it sets the default boot location to the Windows install DVD, so every time you restart, it will take you back to the install. The Windows installer is supposed to change it back (once completed) to the location where it was installed. It is unable to do this as the Windows installer is not aware it is running on a Mac so it tries to change the default boot device, but the Mac doesn't know how to handle it. Usually removing the Windows install disc can fix this, as it will then boot to the Bootcamp partition.
I have done hundreds of installs of Bootcamp on Macs, and this happens all the time.
And I wouldn't suggest slipstreaming drivers into Windows running on Bootcamp, especially to a novice user.
It's usually best to follow what is given in the Boot Camp Installation & Setup Guide