>We are currently running Win98 on a peer-to-peer network. We would like to start moving to Win 2k pro on the desktops but have heard that no more than 10 computers can be connected using this O.S. We currently have 10 computers.

Not really - you can't have more than 10 computers simultaneously working with shared resources from a single Win2K Pro system, but the network itself can be of any size. If you need more connections, it's time to look at Win2K Server.