why? why? why?

Chung-Tao Lee (EST)
Thu, 8 Dec 1994 22:08:40 -0500

i am a newbie in this field. i just download cuseeme.zip from
gate.cornell.edu. then i unzip it, but every time i use it, it always give
me the following message:
Gethostbyname failed(11004)

Error binding to UDP port

Problems at startup. CU-SeeMe will exit

what's the problem? i know pc is really stupid for this kind of job, but it
did work for 1 time, then......
someone plz tell me how to correct this. thanks in advance.
Nelson 12/8/94