Cort1313,
You can create a two (2) new envelope templates, one with the return address
centered to the top of envelope. Another with the sending address in the
normal position, after deleting the return address section.

You will need to run the envelope twice through your printer, making sure
that the envelope is position the in the tray so it prints on the correct
side for each template. And making sure that the envelope flap, doesn't jam
in the printer. For that I would just do a couple at a time. Buy a new box
of envelopes, then take some time and preprint your return address on all
envelopes. Then put them back in the box. Then just use an envelope template
w/o the return section, and add the recipient's address to the front of the
preprinted envelope stock.

Depending on the cost of printing and the amount of envelopes that you want
this done to, it might be more feasible, to have your return address
professionally printed where you want it. Then just use an envelope template
w/o the return section, and add the recipient's address to the front of the
preprinted envelope stock.

I can not seem to find if Word will print a return address on the BACK top
of
the envelope instead of on the front left corner.  Any thoughts anyone?