I Need To Find A File But Only Have Partial Name

I'm looking for images in my asp page.

I know the path and first and last part of the filename.

Example filename: A01-30420.jpg

I have the A01- and the .jpeg. The ##### portion could be anything, but always numeric (sofar).

The A01 is unique, i.e. there will only be one file of A01-#####.jpg

I'm using fileExists object to confirm a file exists when I have the full filename but havn't been able to figure out how to get the full filename when I only have a partial.

I could rename the files, i.e. drop the -##### but I'd have to do that everytime I get new ones so I'd like to work with the original filename if at all possible.