Popcap swf-files are protected so you can't just copy the swf-file.

I did little script what maximizes the flash-object: http://laasonen.net/popcap.user.js

What you have to do:
1. Install greasemonkey-webaddon.
2. Go to this address and click yes.
3. Go to the game with your browser, for example here.
4. Click the +-button and add shortcut to desktop.

Now you can start popcap-games from desktop and play them on fullscreen

EDIT: I didn't notice that all of their games don't use the same technic, so it wont work to all of them