custom_url_rewrite_outbound.patch on local wamp server

Hi all - I am using domain access module on Drupal 5 on my local machine running wamp server. The local site is a complete mirror of the working installation that is already live hosted on a remote server.

I can't seem to get domain access working on the local machine. I was being told that I needed to patch custom_url_rewrite_outbound.patch. I follow the instructions but it's not working. I have installed this patch successfully on the remote machine.

Since you have to go to the command prompt, then navigation to the drupal root to install this patch, could this be a problem with the locations of the different peices.

Drupal root: c:\wamp\www\pf
Server: c:\wamp\bin\apache\apache2.2.8

I have tried installing from both locations and I have moved the patch file around multiple times. I keep getting the message that patch is not recognized as an internal or external command, operable program, or batch file.

Please point me in the right direction.