Renaming Audio Files

[Scofuz]

So i have many folders each with a audio book, some with 50 files, some with 110 files etc.

I want to rename those files to 001. 002, 003 etc.
I made a very simple Script shown below.. is it possible when i start the script, i would be able to input the number of files that i need to rename ?
btw. i would be on rename of the first file when i start the script.
____
send, 001
send, {Tab}
send, 002
send, {Tab}
send, 003
send, {Tab}
send, 004
____