CVS for binary files?

I was looking to set up CVS or some other sort of versioning system to manage binary files which are mostly CAD designs and models. Can CVS do this, or is it just good for plain text code? If not, does anyone know a server that can handle this? We just don't want changes to interfere with each other
since there are employees in various locales

Yes, CVS does a good job on binaries. Someone might come along and say there is something better, but it works for me. If you use WinCVS as a GUI front end, there is a little button to add binary files. It does a reasonable job of warning you if you get binaries and text mixed up.