LoriLee,
I believe many VAs (including myself) who offer virtual transcription services use
Express Scribe. There have been quite a few threads discussing this and other similar services, you can read more
here and
here and
here.
It's always helpful to plug in terms like 'transcription' into the
Search feature on the forum and you can generally get a lot of information that way.
By doing so, I discovered numerous other threads discussing things like pricing, practice software and equipment, etc.
Good luck!