I am having problems with some programs on the windows 2000 professional OS. On some of the programs I am getting errors with communication. The only way to solve this problem is to put a name in the DNS suffix. This only has to be done to some windows 2000 pro's and some windows 95 computers. Does anyone have an idea on what could be causing this problem? This all started when we moved the mainframe to another office and we had to use the name instead of the IP address. I tought it was wierd that it only has to be done to a few machines. Any Ideas. Thanks