Microsoft.exe is an error message that you receive sometimes when running Windows ME and Windows 98. According to Microsoft it is caused when the file you are trying to open is not associated with the correct program on your hard drive ' or the registry entries for the program are missing or have become damaged. To resolve this you have to associate the file you are trying to open with the correct program. Go to Microsoft's support page at the following address and follow its fix-it steps to get rid of the error message:
http://support.microsoft.com/default.aspx?scid=kb;
EN-US;q228903.