Using code I found: HERE (be sure to read the bit about "Microsoft Scripting Runtime" at this link)
I modified that code. I created another macro that attaches "zzzzzz" to the front of the filename of all files with no data in Column AB (excluding Cell AB1).
Example: test1.xls (with no data) would turn into zzzzzztest1.xls
If a file was converted to zzzzzztest1.xls but later has data in Column AB then the code will take the zzzzzz out of the filename. An error occurs if you already have another test1.xls saved.
The first two subs I modified from the above link and should work well. The final "Sub" I made quick just to show you one way you might go about accomplishing the task.
Hopefully that at least puts you on the right track.
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