A question about changing remote repo name

Hi ALL,

I'm running ubuntu 9.04 and the git coming along with it doesn't
support git remote rename command.
Below is the man page of it:
GIT-REMOTE(1)
                                        Git Manual

     GIT-REMOTE(1)

NAME
       git-remote - manage set of tracked repositories

SYNOPSIS
           git remote [-v | --verbose]
           git remote add [-t <branch>] [-m <master>] [-f] [--mirror]
<name> <url>
           git remote rm <name>
           git remote show [-n] <name>
           git remote prune [-n | --dry-run] <name>
           git remote update [group]
Note: There's no rename option.

So i need to change the remote name manually.

I tried modifying the .git/config file locally but it didn't work.

Could someone help tell how to do it?

Thanks

Regards Dongas