Don't really have enough info to get you past where your stuck. Keyclone out of the box pretty much works with no setup as far as broadcasting keystrokes to your multiple accounts.

Install wow.
Copy wow directory to a second directory.
Run wow.exe from each directory.
Log into separate wow accounts in windowed mode. (not the same account with 2 characters)
Tile the windows and your multi boxing.

Once you have that, then fire up keyclone and start pushing keystrokes to each window. At best you might have to manually add each instance of wow to keyclone till you check off the box for "auto add windows" option