2 things -
1.
GSpot will identify the audio/video codecs in most video files.
2. be wary of codec 'packs'. the kazaa one is prolly ok, but beware of the Nimo codec pack. i've seen too many people have probs after installing that.
btw, all you should *need* for avi's are -
DivX 5.05 Free version
XviD
AC3 filter
good luck
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- + - ° GiRLie GeeK ° - + - °
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Therell be days/When Ill stray/I may appear to be/Constantly out of reach/I give in to sin/Because I like to practise what I preach