How can I get a currency converter to be permentally on the toolbar in Yahoo?

I suppose what I really want to achieve is an instant pop up facility. Thanks in advance!....but could you 'spell it out' so I can follow your instructions in a 1to10 format.

Public Comments

1. Buy windows vista when it comes out in January, you can have a side bar which you can put tools on, like weather + CURRENCY CONVERTER!