Hmm...

First, you will need to unistall the entire game...

Then reinstall RTW...

You will now have a vanilla 1.0 version.

You will need the 1.2 to correctly play EB.

Download and install the 1.2 patch.

This may not work, as your computer will think that the patch has been installed already.

Two ways to fix this problem. 1) clean out your registry (not recommened) or 2) download a zip version of the 1.2 patch and then simply manually install the patch by overwriting the files.

If you need any more help, just ask.

Good luck