Change numbers in file name to pad4 with text either side

[mick01]

Sorry if this has already been answered but I cannot seem to find an answer to suit my situation. For example I have files named "m20 - SHAFT - Rev D - For Fabrication.pdf". The text can differ but there is always only 1 or 2 letters at the start & the number following the first or second letter can be a 1, 2, 3 or 4 digit number. I would like to change the number so it is 4 digits long. So for the example, it would end up as "m0020 - SHAFT - Rev D - For Fabrication.pdf". Any help would be greatly appreciated.

[therube]

Duped - with a different User name, viewtopic.php?f=12&t=6239.

So I wonder... (though I actually wondered even before see the different User names).

[mick01]

Hi therube,
Yes I am also "mick01". I no longer have access to the e-mail address associated with user mick01 & I couldn't workout how to change the e-mail address.