How to install Windows 7 on Mac mini server?
Boot Camp requires a $29 Snow Leopard OS X DVD (not the server DVD) and an external drive. The MacBook Air SuperDrive works excellently with no driver hassle.

Sorry I don't have a list of drivers and steps to make up for the work done on the OS X since I'm a wimp and will pay good money to save an hour or two my time. Apple only bundles the Windows Drivers for it's hardware with the client version of OS X (AFAIK)

I hope if someone else has done the hard work, they post their experience. The official Apple solution is simple and works well.