I would use a text editor to do this. In my case it would be NoteTab Pro however there are a lot of others out there that would easily do the job as well.
Hmmm, from the recently renamed and resurrected topic by iLias having to do with meta-tagging and such, this stands out as another limitation that would prevent ppl from really heavily using the current description system. If you do LOTS of description updating and rely on it, can you seriously see someone wanting to fuss about with hacking the rename scripting - or (gasp) going 'external' into a text editor to manage their files...?
Thanks for you thoughts John. I think my intent is being lost however....hehe.. I have been playing with a modded SCRAPS button that Leo demonstrated and have had some nice success with it. I am attempting a toolbar one button collections and a simple form of tagging my files. I do not want to edit the file directly. This is a bit lengthy (apologies) and is a toolbar with two buttons that are three button groups. I add it here to perhaps generate some interest in this method. Please note the:
SetAttr DESCRIPTION="Kite" and SetAttr DESCRIPTION="Tool"
If it is a kite AND a KITE TOOL my thing breaks...
Also this is a whole toolbar so if you try needs a .DOP ext.