This page says that a .MOD is just an MPEG2 file and that it can be renamed to .AVI
If this is the case, that may sort the issue with premiere...
Failing that, Virtualdub will do what you want.
You may need
virtualdub mpeg2 rather than normal virtualdub.
Once in vdub, import one video and set the settings you need (Video->compression to choose codec) and then select File->Job Control, and within that window Edit->Process directory, then point it to the dir with your MODs in.