[Gimp-user] How do I make a box with rounded corners on 3 out of 4 corners

[GeneRickyShaw <forums gimpusers com>]

This one is probably easy. 

I've learned how to do rounded corners, but my company wants me to produce web
buttons that are rounded on 3 out of the 4 corners with one corner looking
square.

I know I can probably just make a rectangle with rounded corners then just zoom
in and manually square out the one corner, but is there a better way to do it?

Any feedback would be greatly appreciated.

-- 
GeneRickyShaw (via www.gimpusers.com/forums)