your problem may occur if one or more of the following files are missing or damaged.
(I Take it your running XP)
Config.nt or Autoexec.nt or Command.com
Could also happen due to a bug but unlikely in your case if you keep a clean system.
"Search and if found,delete these files. Look/search for !!! WINDUPDATE.EXE--- Not to be confused with WINUPDATE.EXE note the spelling - the added 'd'.
Delete this folder c:\freescan (None of the above, have to be on your system.
More than likely the result of loading the game,which can and may cause you a problem if you have to sort out via the systems registry.
If not already done delete/uninstall the game program and any files and folders etc.Then do a system restore back before the install.
If you go to the following link you will be presented with a small file download (A Poss Fix )straight away,so dont be alarmed and save it to you my documents etc.The file is "quite safe" and i have used it today with a friend of mine with simlar problems.