Houstonist told you about Continental's new mobile boarding pass service in last week's Tech Buzz. This week we tested the service. Step 1: Check-in via the Continental PDA web site (http://pda.continental.com/) Assuming you have web access on your PDA (duh), you should be able to complete this on the shuttle ride from the parking lot like we did. Navigating to the mobile site was painless. And, the email containing our boarding pass hyperlink hit our......