Sheet Metal Question

I am a newbie to sheet metal.
(Still on NT and 2001+, but any day now XP and 2004.... if IT ever gets
time to do anything other than fighting spam, virusses and installing
patches!)
The shape I want to finish up with is what you would get if you took a 8" x
3" sheet, stuck it in a vise crooked (IE non vertical) and bent it flat.
The flange at the end would be bent up with the edges at an angle to the Z
plane.
Ugly it may be but this is fine for my applicat and makes it cheap and easy
for the sheet metal shop.
However, if I model it using normal techniques ( IE all the ones I have
found so far!), base flange, edge flange etc, I finish up with a sheet which
when flattened is no longer a rectangle, more like a hockey stick. This is
not good for a cheap sheet metal bracket.
I thought that somewhere there was a technique to add a bend to a flat
surface, without having to 3D model the final part first.
Cheers