is there is any other step after receiving activation mail from fedora-trans-list-owner@redhat.com ???

Just checking.. Have you went through these steps to generate your DigitalID?

http://fedora.redhat.com/About/Projects/translations/translation-windows/s1-ssh.html

Ali.. Yes there is..

Before checking out, you need to point to your private key in the preferences of TortoiseCVS.

You can see the steps in the same tutorial.. How to configuring TortoiseCVS to use Translation Repository of Fedora:

http://fedora.redhat.com/About/Projects/translations/translation-windows/s1-setup.html#s2-setup-setup

Tell me if it works with you..

Maha.