I have two computers. One computer has Windows Vista Home Premium 32bit and the other has Windows Vista Home Premium 64bit. I have the latest Adobe reader on both computers. The preview pane is set the same way on both and so are the settings for the Adobe reader. On the 32 bit OS I can preview anything in the preview pane. It reads .jpg, .pdf. Word documents.. all of it. On the 64 bit the preview pane always shows me pics, sometimes previews word docs but will only ever show me the adobe icon in the preview pane. It never allows me to see what is in the document. I have checked, double checked, and triple checked all the settings and everything is the same except I still can't preview pdf documents in the 64bit operating system. Can anybody help?