I too am looking into 8mm film conversion. I've been doing some research on the internet over the last few days, and found this place:
http://www.videoconversionexperts.com/
They seem to be a little on the pricey side, but it looks like they do quality work. They detail their entire film conversion process and even offer some example shots. Also, a lot of film conversion sites out there seem unprofessional, while this one seems great.
If I get enough money in the near future, I think I'll give them a go.