Greetings!

Nice impulse buy!!! I am impressed!!! No hard drive, power supply or case, though???

I cannot help much with the gaming, but with Win2K pro vs server...

You will need to go through and disable any of the services you do not need (by hand) on server. Otherwise, they will slow the machine down. Also, tune any processes that are left - since server is multiuser, the resource sharing is a bit more intense. There are a number of cool features of server that are nice (Terminal Services, for example), but make sure you lock it down properly.

I have converted FAT->NTFS during installation without any problem. I would not recommend the upgrade path, though. If you have rebuilt everything else, you might want to take the time to build the W2K from scratch. This will eliminate any leftovers that might be in your older configuration. Also, doublecheck your video and other drivers, to make certain that server can handle them.