hi, got a bit of an issue here. i'm trying to output mpeg2 files from my vegas project for use in sonic scenarist DVD. However it wont accept them no matter what changes i make to the output filter options. I notice that vegas outputs files with the .mpg extension where as premier outputs .m2v files. the premier files work fine with scenarist but i'd rather go straight from vegas if i can. any ideas why this might be?