You sir, are flippin' awesome. The attachments will always have different names. If the file names are the same then just prepend a 1_ to it.

UPDATE: I tried to create a rule to run the code you gave me, but I am not finding it in the Script dialog box. I checked https://support.microsoft.com/en-us/kb/306108 and the code looks really similar to what you gave me. What gives?