RPC error

Question

 i am getting error as remote procedural call unavailable. 
I m running program on IIS 8, and i m using excel 2000, windows 8, sql manager 2008.
when i run, then excel sheet comes, and problem is in editing data, it gives error as File format is not valid.
And in the Windows log shows error as "Product: Microsoft Office 2000 SR-1 Professional -- Error 1706. No valid source could be found for product Microsoft Office 2000 SR-1 Professional.  The Windows installer cannot continue."
please help me to solve these two problem 1) excel problem and 2) remote procedural call unavailable