回复：How to make Acrobat Reader 6.0

Windows Explorer -> View -> Options... ->File Types
find PDF (Adobe Acrobat Document), highlight it, then click Edit, Highlight Open, Click Edit, click Browser to find Acrobat Reader 6.0, like following(i user Acrobat Reader 5.0 )
"C:\Program Files\Adobe\Acrobat 5.0\Reader\AcroRd32.exe" "%1"