If you connect to the Android Market using the same account, even temporarily, you can access the same purchased apps from two devices. Hell, I use the same account on 5 devices and it works. After you do the deed, you can change accounts.
If you're feeling really studly, though, you can use sqlite3 directly. Open up your manualnooter .zip archive and take a look at /tmp. In there, you'll find the sqlite binary, and in the /tmp/scripts directory, you'll find the database.sh installer script that uses it. You could modify the mn .zip to make your mods directly when you install the .zip from CWM.
Here's
an article on using sqlite3 directly from the command prompt. Here's
another on using it to block OTA updates.