Does anyone know how to use Mpeg repair 1.58 to patch the pan and scan info of a mpeg file?

I've been using guides to put svcd onto dvd-r. The only problem I consistently have is the picture is never quite centered right.

I have a Pioneer 333 dvd player. I've read in other posts that you can use mpeg repair 1.58 to patch the pan and scan info on the mpeg to be 480 x 480 but I've not been able to find any instructions on how to do so.

Any help would be great!!