A. You might receive such an error if the run32dll.exe file is corrupt or if a virus (e.g., W32/SirCam@MM) is present on your machine. To correct the error, begin by ensuring that you have an up-to-date virus checker and perform a full scan of your system. Next, to restore run32dll.exe, insert your XP or Win2K installation CD-ROM, then go to a command prompt and type
expand \i386\rundll32.ex_ %Systemroot%\rundll32.exe
to extract the version of the file to your system. After you extract the file, restart your machine.