my friend had a similar problem.. but he was a freak, so he would run his computer without the case and just switch hard drives when he wanted to switch OS.. which, for him, wasnt too often..

there was also a period of time where he had both HD in but just disabled one in the bios settings (some of them let u do this.. not all).. and switched that way..

unless you enjoy doing that kinda stuff, read the howtos suggested by the prev poster... i would try to just put /boot and Win2k on one HD, the rest of / on the other HD, and install BootMagic on Win2k and use that to switch.. Partition Magic has a wizard that will help you do your linux partitioning and they both have a recovery feature if something does go wrong..

Darkmo0n