I have three computers running Windows 7 Home Premium and two work fine.   The third one will not allow attachments to be opened from within the application.  Doc, PDF, xls, and every other type document will not open unless first saved to the desktop or somewhere else.   I have read most of the solutions posted on similar problems and have followed several recommended procedures without success.

I have checked several things and all three computers seem to be the same, but obviously something is different.   Very frustrated at this point as I can usually figure these things out.  Please help.

Thanks,

Bob