How do you regenerate Thumbnails in the browser?

I noticed that if I'm impatient (usually the case) and don't wait for all the files to generate the thumbnails in the browser view, then the thumbnails that I didn't wait for never appear again...

So, how do I tell CS to regenerate the #$@!@#*&^% thumbnails!

These are all RAW images BTW if that makes any difference

Thanks for your help on what I hope is just a simple command away....

you can delete the cache files then reenter the folder with the browser.

Thanks Dave, but where are the cache files located? I don't see any other files of any type with the original files on my hard drive.

(I have Windows XP Pro BTW)

OK I figured it out...

The "Purge Cache Command" under Files in the lower Browser Menu....

Why not have something more direct and obvious like "Regenerate Tumbnails"....