Email and address book clients

I just started using 360, using AVG before that.

 

I was looking throught the setting and saw that Outlook is listed for the email client and address book, and there didn't seem any way to change these settings. I use Thunderbird for my email program and address book.

 

Are there any settings I need to change to make sure my incoming emails are scanned? (I also use Firefox for web browser and don't know what setting need to be changed, if any for that program.)