Of course, if you are using ActiveState Perl, you could use ppm. Just try either:

C:\Perl\>ppm3 install HTML::Parser
C:\Perl\>ppm3 install HTML::Tree
[download]

or

ppm install HTML::Parser
ppm install HTML::Tree
[download]

But actually, if you're only worried about finding the tags so that they can be later removed, you could use WAVE

WAVE is a pretty cool tool that you can pass a webpage, then it will graphically display what would cause accessibility issues. It actually even has a toolbar you can add to Internet Explorer(or probably any web browser), that you can use.

Hope this Helps.