move part of filename to ARTIST

I have a folder with files that have their Filenames in the following format

Track Number - Artist - Title.mp3. (eg. 001 - Led Zeppelin - Stairway to Heaven.mp3)

Unfortunately they are all tagged as various artist

I'd like to copy the first part of the filename to the Artist tag and the second part to the Title, but I can't figure out how to do it. I checked the FAQ and I couldn't find it there.

I assume I can create an action to do this, but how?

Normally I'd just type them in by hand, but there are 500 files like this so that could be tedious.

Please help

Thank you

Well it looks like I was looking in the wrong area. I looked down a few threads and see someone was trying to do something similar. So if I understand correctly I can use:

Convert filename - Tag command like this

001 - Led Zeppelin - Stairway to Heaven.mp3

%Track% - %Artist% - %Title%

Is that correct or am I missing something? I'm going to try it and see how I make out in the meantime.

Edit: Worked perfectly

Sorry for wasting a thread

you can also use:
%dummy% - %artist% - %title%
%dummy% - %artist% - %dummy%

if you don't want to rewrite the trackumber or tracknumber and title