Enabling tips in the user profile

I'd like to give users on a site the option of inserting a TipJoy button into their profile to enable them to receive tips from the community. I have created a new profile field which accepts the TipJoy code, but unless I switch the default input format to "Full HTML", the TipJoy field displays the code as opposed to the button graphic. Does anyone have any suggestions how I could work around this?

Ivan over at TipJoy (http://tipjoy.com/) did mention that he might look into a module for Drupal but I've got a feeling this might be some way off.

Many thanks