How to make web scanner scan this?

Being into Mac themeing I have a heavily modified Firefox in a seperate folder to the my normal Firefox and have also changed the name of Firefox.exe (because of firewall problems).
How can I make avast! web scanner scan web pages when using this modded Firefox?

Edit avast4.ini (in \program files\alwil software\avast4\DATA\avast4.ini). Find the section [WebScanner] and add (or edit, if already present) the line OptinProcess.

[WebScanner]
OptinProcess=my_new_creatively_choosen_name_for_firefox_browser.exe

I tried that and set the web scanner to show detailed info and it is now scanning pages in my modded Firefox.
Thanks a lot.