now.an new error occur:
/home/cvsroot: no such repository

Yes.my os is red hat 8.0.
in /etc/services file,
the following is configed:
cvspserver 2401/tcp
cvspserver 2401/udp
and i have configed /etc/xinetd.d/cvsperver:
service cvspserver
{
disable=no
socket_type=stream
wait=no
user=root
protocol=tcp
env=HOME=
server=/usr/bin/cvs
server_args=-f --allow -root=/home/cvsroot pserver
}
but the same error comes again!

hi!

i assume you use xinted fro the cvs. check the /etc/xinetd.d/ directory if there is some file which could be a xinetd-cvs config file.

my cvspserver file:

service cvspserver
{
        flags           = REUSE
        id              = cvspserver
        server          = /usr/bin/cvs
        server_args     = -f --allow-root=/cvsroot pserver
        socket_type     = stream
        wait            = no
        port            = 2401
        user            = root
        group           = cvs
        only_from       = 10.0.0.0
        log_type        = FILE /var/log/cvs
        log_on_success  = HOST USERID
        log_on_failure  = HOST USERID ATTEMPT RECORD
        disable         = no
}

check the security stuff (ip,user etc) and you should able to connect to your cvs