Help !!

[Tykelad]

Hi, I'm new to all this and have a problem.
I have bought American Conquest and have successfully made a back up copy using CLONE CD. I want to install it at work as well but don't want to take the disc and subsequently found a patch on GAMECOPY WORLD. I have downloaded the patch and am now stuck. I downloaded it into my "My Documents" (Is this OK ?) and then tried to activate the patch but it just says that it can't find the relevant file (Wintab32.dll). I did a manual search for the file and found it in the American Conquest File. What am i doing wrong ?
Basically i am a newbie and need to know how to do the following

1. Install the game - Full installation (Ive done this)
2. Replace the original DMCR.EXE executable with the one from the Executable Archive (What ?????)
3. Play the game (I wish !)

Thanx