The PC is a Dell 530 with 3GB RAM and is running Vista and Office 2007. The computer has Adobe reader v8. Pdf attachments that come through to Outlook are converted to a Word document attachment. They do not open as a pdf file but open as a Word document and of course can't be read. If you go to preview, click on preview file, it will open as a pdf file but then can't be printed. If they are forwarded to another computer they open fine. Any ideas?