Server designs/setup/topology

Well getting close to the no choice for the Win2k conversion. It is a chance to reconfigure a few things. Looking for suggestions/thoughts/problems found about combining servers for tasks. I work in a pro AS400 shop and everytime we have to ad anew Intel box they complain. 🙂 So a few arguments to help me out would be cool. Like how putting the file server and printer server together would be good or bad??? Any thoughts would be great.

Thanks

Mike Hamilton