I haven't seen scrollbars for the PDA in 8.2, don't know if 8.5 has them. Screen sizes for PDAs is always an issue, since there are so many devices with so many different screens.
In my programs, I've had to simply make 2 or 3 different versions of the same VI in different sizes and orientations (landscape & portrait). I then have my main program read the current screen size (using PDA Get Screen Size), and load the appropriate sub-vi. Its clunky, but the end user doesn't see a difference.
B-)