all that needs to be done, start the boot camp manager, create a partition, the size depends on what you plan to do with it, i use mine for steam, and have allocated about 50GB.
after the bootcamp manager is finished it will tell you to insert a disc, do so, then it will automate the install as much as it can, ie dont touch anything (ie holding bootkeys, holding the mouse button down to eject discs, etc) and also install to the correct partition (called bootcamp).
its not that hard to figure out, and last time i did this took me about 20 mins to install xp... which i still think is a better gaming os than 7.
also, @rockstar, because its not a signature.