Pull Info Into External Site

[1up_dave]

Hi, I've been searching for days, and tried to piece together various code from search results on Google, but I just can't get the *darn* thing working. Essentially, I want to be able to pull information (username and forum categories, specifically) in my other non-vB sites. I only know a little bit of PHP and MySQL, not even the bare minimum, so please don't post really tiny snippets of code unless it's complete. I'm still learning, though, so commented code would be more than appreciated.

I'm hoping not to pay for this assistance (college student and all), but if I have to, I get paid on Friday.

Thanks for the help!