[cvsnt] login error

[ann]

Hi,
I installed CVSNT and trying to login from command prompt using
following commands

set cvsroot=:pserver:cvsuser at PC1:/cvs
and then
cvs login

but I got the following error

Logging in to :pserver:cvsuser at PC1:2401:/cvs
CVS Password:
cvs [login aborted]: Error reading from server PC1: -1: Unknown error
I want to use cvs with eclipse IDE(version 3.0.1) and try to create
repository but got following exception
Error validating location:"Socket Exception:Connection reset"

please help me