Well, yes... in case you have not run the Clean .bat .Is it possible to change widescreen mod resolution when it is already installed?
You just start the setup-widescreen.exe "again" and choose to reinstall. Now there was a version that allowed the saves to be set to a default resolution, but it was in v3.05 of the widescreen mod I think and I don't think the BWP had that at the time, but anyway that should be besides the point... as you need to start a new game after the mentioned setup-file is run, and the reinstall with the different resolution will take a lot of time, as the computer will automatically uninstall the mods installed after the widescreen mod, then uninstall the widescreen mod to reinstall it and then it will re-install the mods that were uninstalled, that probably include the Generalized Biffing, so the install will take a lot of time... so don't wonder if it takes a lot of time.