Paid Subscription email and custom profile fields

[Keith]

Users are using our Paid Subscription system and it's been working well. I receive an email confirmation which provides me with the basics.

But I can't seem to find out where I can edit this function so that the email will include the custom profile fields I've created. By example, I want the email to include the data users have put in their profile, such as:

A paid subscription has just been purchased by USERX at mysitename.com

To view their profile, go here:
http://www.mysitename.com/forums/member.php?u=1836

Your First Name: : John
Your Last Name: : Doe
Home Phone : 410.55-1212
Address: 1292 Main Street
City: Washington
State: DC
Zip: 11111
Anniversary : 11/2/2000
Spouse Birthday : 1/1/1980

Where is this template, or php file that I need to edit?

Thanks in advance.