missing the run32dll.exe erh which windows do you have ? Is it win98/98SE/Me or XP ? If xp or Me do a system restore to a earlier date when things were ok.
To repair this in Win98/98SE you will need the Win98SE CD.
You need to go to Start-Run and type in SFC then type in the above missing file in the top box then the destination to be coppied to which is your HDD and select the source from or point it to the D Drive.
you could try and run SFC in the Run box and hit ok see if that starts the process of for you
For XP > click here