Hi,
You'd be much better to use a scripting language for this. Power shell is really just a shell.
Relevant Skills and Experience
Tons of experience in several scripting languages: PHP, Perl, VBScript, Python... they all the do same thing. Probably the easiest one for this project would be PHP.
Proposed Milestones
$155 USD - Completion
The bid I'm submitting reflects doing the work in a script (such as PHP).
I can have the code up and running in a matter of hours, probably in 2 hours time or so (so you'd have the results you need in a couple of hours). You'd just need to let me know what you need extracting from the XML files - which tags, and how you want them indexed in the CSV file.
Just send me a message if you have any questions.
Thanks,
John