All you need to do to fix things after the install is re-install media player classic (or the modern media player if you prefer). It does'nt keep trying to change things back every time it runs.
OK....I'll remember that.....some of those programs are worse than a virus. :)
Just tried Nero to copy a DvD..I get an error: The DVD is copy write protected and cannot be read. So much for Nero... :(