[GTAce]

In the User Profile Fields section of your ACP, click "Add New User Profile Field" and fill out that information. Then, click "User Profile Field Manager" and find the id number of that new field. It will be in the name column, I'll use field2 for this example.

Just make note of that number and go to Style Manager and edit your postbit_legacy template (assuming you are using vertical postbits) and then place this code where you want it to display

					<if condition="$post['field2']"><div>Custom Field: $post[field2]</div></if>

Replace the 2 with the id of your new field and "Custom Field" with the title of course.