Does anybody here know of a really fast and preferably free software 
screencopy-utility for windows xp?

Background:

I have a powerpoint presentation that I would like to export to avi (or 
whatever video format). There are tools like MS Producer available (OK - in 
this special case >was< available - MS shut this down), but they do not 
capture the video- and audio-effects properly. Other programs just take the 
the complete slide in its final state and "export" this to a video editor. 
Well, for something like this I need no "export" program - I would just 
hardcopy the screens myself and use a video editor.

I'd like to have a tool that runs in the background, captures video and 
audio from screen (audio would be nice, but not necessary), while I click at 
the slides to initiate the effects and transitions.

Just an uncompressed series of screenshots at 25 frames/sec (minimum) would 
do, too. Reassembly should be no problem. My own attempts using .net are way 
too slow. Any ideas or links to libraries for really fast screencopy would 
help.

My own attemps via .net and bitblt stop at 5 about fps. Better than Corel 
Capture which stops at 1 fps.

So my current solution is to connect the tv-output of the graphics-card to a 
videograbber. While this works with 25 fps, the resulting output is quite 
low-res and thus the text seems washed out.

Alternatively, an open source tool that easily animates bitmaps and texts 
(zoom, blend, rotate & slide around the screen along predefined paths) and 
has the ability to export the result to avi would help, too.

I have googled for some time now and tried quite a few programs - no real 
success.

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