Drupal's API doesn't contain any ready-made function to check if a user has a certain role. While it's certainly easy enough to do, it can take a moment to figure out initially. Here's a little function that demonstrates how to do it.
Generally, when you want to change the location that a for redirects to after submission, you usually should set $form_state['#redirect'] within a call to hook_form_alter().
One issue that I recently came across with a module I was editing was that the fieldsets / field groups from a CCK type weren't in the $form array passed to hook_form_alter().
It's been almost a full month since Balance Tracker was released to the Drupal community, and I think it's probably about time to mention it on our website, and try to provide