CVS Problem

Til now, I can't store files because of connection problem. I've followed step-by-step instructions about configuring CVS, but It was really frustated me..

With Putty and TortoiseCVS installed on Windows XP, connected on LAN, with firewalled and proxied network, I cant get my working environment.

Even, canot connect to CVS with error message : "unable to open connection to <address>. gethostbyname: unknown error".

I've tried so many addresses, but seem still not working.

I hope somebody can help me....

thnx.