Thanks, Johnwill! You are a lifesaver! It worked.
Bob, thanks for the information. However, it is really interesting when I am different clients. Usually the TCP/IP works fine. However sometimes I run into a network that they cannot see other computer's files even though they can get on the internet or they cannot see other computers printers even though they can get on the net. I usually check all the network configurations, etc. and if I still can't get it to work, I download John's netbui and it works in about 30 seconds. I can't understand why Microsoft does not support this in XP. However, a lot of people must have contacted them because they do have instructions now. Unfortunately you have to have the Microsoft XP disk and my client's XP came preloaded on the computer and she only has a restore disk. Any way, thanks so much for the help.
Johnwill, you are awesome.