I decided to edit my entire movie in Premiere, so I used the process of creating the uncompressed AVI from the M2V as ADM explained it in "Step 3"; the only thing I didn't do as instructed when editing the AVS file was the cropping command since my source (the movie) was already in 16x9 aspect ratio. You still need to edit the LanczosResize line, though.
Read through the guide thoroughly with your thinking cap on, and hopefully you'll get though the process successfully and more quickly than I did when I impatiently ran through it. Hope this helps.