WinDoctor looking for C\:WIN95 folder on Vista computer.

I have a new Dell PC, running Vista home premium & Norton SystemWorks 12. Yesterday I updated Norton Antivirus, then ran WinDoctor. I found 6 problems for the Checkit Diagnostics program (part of SystemWorks), where the icons can't be used.

 

The icon C:\WIN95\SYSTEM\PIFMGR.DLL   cannot be used. The icon may have been deleted or the .DLL might be corrupt. 

 

I am running Vista.  My C:\ drive does not have a WIN95 folder. How do I solve this problem?

Thanks for your help!