Mac OS X includes a feature called Apple System Restore. You can access it through Disk Utility and use it to create an image of a partition or a whole disk, and replicate that image to another partition or whole disk - even over a network. There's also a command-line version in /usr/sbin/asr. I think Mac OS X Server will even let you NetBoot a system on your network and have it automatically restore its local disk from an ASR image.

I have not done this, but I assume you'd be able to set up a system exactly as you want it to be set up - with both Mac OS X and Windows partitions - and create an ASR image from that, which you can then restore and use at will.