I have this problem – I wanted 7zip to be in my right hand button click menu when using Windows Explorer.
My System
Windows 7; 64 bit running on non-Intel (AMD) processor with two cores.
My Solution
I did what was suggested by "problem212", above(actually back on page 3), and this solved THAT problem. However, it seems dumb that when you are viewing a subdirectory within the 7 zip file window, can't navigate into it by double-clicking or anything else. TELL ME I'M WRONG.
At least now I can invoke the application from anywhere I might explore with Windows Explorer.