CVSNT 2.5(.03) + Eclipse 3.5 + Windows 2000, how??????

Hi,

Im using Eclipse 3.5(Eclipse Galileo) on a Windows 2000 desktop-pc(as client). I would like to connect to an other Windows 2000 desktop-pc(as server) wich has installed CVSNT 2.5.03 on it.
If I try to connect from eclipse using "CVS Repository Exploring perspective"with the Host, Rep.Path, User, Password, and Connection Type: "pserver" using port: 2401(as configured on serverside), I become an Error as well:
"Error validating location: Could not connect to :pserver:uex1234@172.39.89.105:/CVS: I/O exception occured: No response from server."

If I try it with an older version of Eclipse (3.3 - Eclipse Europe), it works.

Any Idea?

Thank you...