Problems loading videos and jpegs

Well, I deleted a bunch of stuff on my computer, and with it, i lost the kodak imaging program for win98, which isn't a problem, because I just got the win95 version, but anyways...whenever I try to open a downloaded Jpeg image or mpeg movie a small box comes up in the middle of the screen with no writing it it, but just the words OK on a button, and when i click the button, nothing happens. I can still open mpegs and jpegs if....for MPEGS, i go into movie player and open it, or Jpegs if i go into imaging and open it. Whats the problem, am I missing something?

 

The file Assoications are messed up. The simplest method to correct it is to install a good viewer like IrfanView, see; http://irfanview.tuwien.ac.at

Check it out.