Use Gspot to find all the codecs on your system (much more comprehensive
than control panel/sounds and audio devices).
http://www.headbands.com/gspot/

Use Microsoft Video decoder checkup utility to check which MPEG2 codecs are
compatible with WMP:
http://www.microsoft.com/downloads/d...displaylang=en

"PSRumbagh" wrote in message
...
How do I find out which Codecs are installed on my Laptop? Which ones can
/
will be used by WMP V10 under WinXP Home SP3? Does WM Codecs 9 contain a
full
set of codecs and are they suitable for WMP V10?