Actually in 2004 you CAN edit the sketch plane of a HW hole. provided that it was a planar sketch to begin with..
Remember there are two ways that you can use the HW... select the planar face first (which yeilds a planar sketch)
or to just turn on the tool and click the face you want a hole on (produces a 3d sketch)
Generally I always select the panar face first (unless its a non-planar face I want holes on) and then turn on the HW.
that said... If you have planar Position sketches in the HW feature, you can Right-Mouse on the position sketch under the HW feature (Sketch1) and select edit sketch plane.
That should do it.
Regards,
Jon
jgbena@yahoo.com