Joel,
I never could get CR Viewer to do auto refresh, you have to save the report with data. Trouble is a few days later when the user views the report he gets old data.
I do have a solution to offer you though. It's called Logicity and you can find it at
http://www.logicitysuite.com/. They have a free version that did exactly what I wanted it to do but they have a Pro version also. It has auto refresh, print & converts to pdf. You can also create a desktop icon for your users to allow them to go straight to the report view.
Anyway I hope this helps