I've got the latest version of CiviCRM (3.1.2) installed on http://test.nccommunities.org/
Log in as demo with password demo. Click CiviCRM.
I created a report for attendees for the conference and put it on the dashboard -- cool!
In the bar across the top, click Events, then Dashboard. Go ahead and register, if you want. You can get out of PayPal and return to CiviCRM without paying.
If you'd like to donate to PINInc, go to http://test.nccommunities.org/civicrm/contribute/transact?reset=1&id=3. I set the minimum to $5.
If you have a login on test.nccommunities.org, I can give you some admin privileges so you can poke around. I've got CiviCRM sample data on the site and some folks come in to explore the sample data, so what I'm adding gets put in along with all that stuff.