Hi, I wonder if you could give me some assistance about software upgrade. I had Acrobat Reader 5 on my PB, and decided to upgrade to 6. However, after the upgrade, I get "error code - 10660" whenever I try to open a .pdf by clicking on the file. I can still open the file from Reader 6. What do I need to do to be able to open .pdf files without having to open Acrobat Reader 6 first? And if you could explain why it is doing that that would be a bonus! Thanks a lot for your help!