Hi Tim,
First of thanks for this great contrib. It is very simple and its functionality is very well. I recommend this to all oscommerce users.
Also How about "login box anywhere" . Like your contribution, only 2 tep_field(one username secaond password) and login button. In addition to this, it can be replacement of "greet_user". So if a users log in the login fields change to "Hello Mrs Bryan etc.." I know it must be simple but i am not a programmer.
Regards
Utku