I have a Curve 8310 and need to be able to open and view PDF's. I don't need anything but a "reader" for PDF's -- not a program to edit them.

Does anyone have any advice on which program to buy to view PDF files?

Thanks,
Crockett

You should be able to open them natively without any additional software. THere are some third party programs that do better: Beamberry, Repligo, DocHawk (I think). Try a search.

Wirelessly posted (Verizon 8830)

I agree with knocka. I don't know the benefits of 4.5.
In the past, I used beamberry.