What's the best way to write this regular expression?

[John Salerno]

Alright, I'm simply lost about how to install these modules. I
extracted the folders from the .tar.gz files and then went into those
folders in my command prompt. I typed:

C:\Python32\python setup.py install

and for a while something was happening (I was doing the lxml one) and
then it stopped with an error that it couldn't find a file. So I have
no idea.

Next I installed the "distribute" module, which seemed to install
okay. But now I don't understand how to use easy_install. Where do I
call it from? What do I do with the .tar.gz files at this point? The
instructions for lxml say to run this command:

easy_install --allow-hosts=lxml.de,*.python.org lxml

but WHERE do I run it? I tried it in the Python directory, and then
further in the lxml site-packages directory, but it doesn't work. What
do I do with it? Where do I put the .tar files?