I am no longer able to view pdf document on my Blackberry. I have a Curve (8310). I have always been able to view them until about 2 weeks ago. How can I get that ability back? Please help!!!!

Is your BB on a company (BES) system?

Some .pdf docs are not compatible with Blackberrys. Not all .pdf's are created equal - it depends on the platform that created them. There is limited .pdf support built into the Blackberry OS, but for real .pdf viewing/editing/creating you need an aftermarket application like the premium edition of Documents To Go. I believe BeamBerry is also capable of viewing .pdf documents but not creating them.