Google Analytics Goals with Facebook Connect Auto Register
 

I have auto registration on for Facebook connect and would like to track goals with analytics.

This is done by tracking the address funnel they goto. For example I track a goal for normal registration as register.php -> register.php?do=addmember.

When someone autoregisters with FB Connect it just takes them to register.php which obviously I can't use to track with. Where would I find this redirect in the source code so I can have it redirect to something like register?fbconnectuser=new

Thanks.