ME Remote Desktop

I have ME at
home. The server at my office is 2000. I was told that XP
has a built in license for remote access. But not ME. The
company that installed our server set me up as a temporary
user. I cannot log into the remote now because the
temporary license has expired. We were not given software,
CD, Licenses, etc. I was told, that the only way to make
this work, is to get the license number or purchase XP
Any feed back??
Thanks Carol B