What happened to the CD?

"gazzathorp" wrote:

Suddenly, perphaps after automatic update of windows media format 9 & series
9 runtime setup I cannot access excel witout error message asking me to
insert CD comes up with 1706 and cannot find PRO.msi If I leave this on
screen and attempt a different excel doc It opens. Any ideas how to rectify
this as I dont have cd to reinstall!