How to add file extensions to lots of files

We have thousands of Adobe Illustrator and EPS files on our Mac OS X server. In the past, we were an all Mac company so no one had to worry about file extensions. Now we have some PCs and it's been a real pain for the Windows users to access files, since without file extensions, there's just no easy way for them to figure out what the file format is. Is there an easy way to do the equivalent of a "find all files that are adobe illustrator, but don't have a .ai extension, and add a .ai extension", and then do the same for eps files?
edjustedAsked:
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jwildingCommented:
Namecleaner from siig software, fast and fantastic.

http://www.sigsoftware.com/namecleaner

J
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Andrew DuffyTechnical Services CoordinatorCommented:
One other method worth mentioning is to (for example) move all the illustrator files without an extension into one folder. Use a Windows command line to access this folder and run the command ren *.* *.ai to change the lot in one fell swoop. Repeat for other file types.
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edjustedAuthor Commented:
Strung & jwilding, I will try the programs you pointed out and report back. I had started using R-Name 3, which is great, with the problem of having to manually seperate the AI files from the EPS files, and then to unselect the random files that *already* had an extension.

In-effect, that's a great idea except that the files are scattered and nested all over the place and it'd be a heck of an effort to move them, then to move them back.

Thanks!
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edjustedAuthor Commented:
Just to be even more clear, *ideally* (if it exists), I'm looking for a script or program that would go through all the files in all the folders, determine what kind of file they are based on the Mac filetype info, determine if it already has an appropriate extension, and *then* to add the proper extension. Phew!
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jwildingCommented:
Yep, name cleaner checks resource fork file type and creator codes and then adds suffixes as you see fit.  You code it very simply and off it goes.  If you are unsure of your file type and creator codes, open sherlock in OS9, click the bit that brings up all the detailed search options (which I can't remember cos its so long ago that I did it) and drag a file into the window.  It will fill in the file type and creator code fields.  Else use the get info command in resedit.

J
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edjustedAuthor Commented:
Wow, name cleaner rocks! Saved me so much time! Thanks!
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