The last day or so I worked with Youki to verify CPV2 works with AtomicFE. The good news is that it does. He ask me to post setup instructions so here goes.
Download and install AtomicFE and configure it for Mame as per its instructions.
Download, install and configure CPV2 as per its instructions
Launch AtomicManager
Open your cfg file
Click on Advanced Options
Click on External Commands
You now have two options, Automatic or User Options
The proper commandline syntax is:
c:\cpv2\cpv2.exe -r=[ROMNAME]
Check the appropriate boxes.
Save the CFG
If you set it up on the User Actions tab (hotkeyable) you then need to launch the AtomicKeys GUI and configure your hotkeys to call the application.
Enjoy,
John