cvs 1.11.1p1 commit problems

[mrao2001]

Hi all

I am very new to cvs and having very hard time in configuring cvs 
1.11.1p1 on Solaris 8.
Had configured cvs as per the instruction given at this site
http://www.taursys.com/howto/cvs/.

Able to login, checkin and checkout the files and directories.
But when I tries to commit some changes it gives the 
following error.

$cvs commit
/export/cvs/cvsroot: no such repository 

also noticed these messages in /var/adm/messages
Jan  2 16:30:38 cvs [ID 225002 daemon.notice] login refused 
for /export/cvs/cvsroot

Please help

TIA
mrao