Can anyone recommend a good, free screen recording app that is simple, easy to use, records to AVI and SWF, and will run on Windows XP?

I'd like to try recording a full, beauty retouch in order to make one of those sped-up movies, the like of which I see on Youtube (and here).

If anyone can tell me how to speed the thing up that would also be helpful (since an average retouch can take me anything from 4 to 8 hours!).

Any info would be greatly appreciated.

I've got this one, which is free, although you can upgrade to a paid version (around $99).

http://www.deskshare.com/

It records to AVI, WMF and flash.

here is another from sourceforge.net: http://sourceforge.net/search/?words=camtasia&type_of_search=soft&pmode=0&words=camstudio

Thanks guys... much appreciated.