Tag from Filename question

I have quite a few mp3's that I am trying to tag that have the disc number and track number stored as Xxx where X is the disc number and xx is the track number.

Can Mp3tag read this filename format into the relevant id3 tags?

Any help appreciated.

I would use the Converter "Filename - Tag" to put the Xxx from the filename in the TRACK field.
Then you have for example:
TRACK = 101

And after you used the 2 actions, it will become:
TRACK = 01

Action #1:
Action type: Replace with regular expressions
Field: TRACK
Regular expression: ^(\d)(\d\d)$
Replace matches with: $1-$2

[ ] case-sensitive comparison

Action #2:
Action type: Guess values
Source format: %track%
Guessing pattern: %discnumber%-%track%

Thankyou, it works perfect.