Installing cvs package after tar.gz package

[Rodolfo Medina <rodolfo.medina@gmail.com>]

I have auctex 11.84 installed via a tar.gz package, and want now to have the
cvs version.

Can anybody please suggest all the steps so to remove the old one?  Or maybe
simply installing the cvs version will completely override the old
installation?

Thanks for any reply
Rodolfo