1706 error is: No valid source could be found for product X. There are a
few possible reasons for this.
1. Only Administrators have access to the Office Admin Point on the network
- Add appropriate permissions to source files.
2. There are some missing registry keys that need to be repared. Follow the
articles in Issue 2 to make sure the appropriate keys are there.
258847 OFF2000: Error Message: "The Feature You Are Trying to Use Is on a
network resource that is unavailable.
310777 OFF: Error Messages When You Try to Run Office Setup on Windows XP
265194 OFF2000: Windows Installer Appears Every Time a Program Is Started
274473 OFF2000: Windows Installer Runs Every Time Help Is Used on Windows
I hope this helps!
Microsoft Product Support