HELP INSTALLING!!!! PLZZZZ
 

Hi,
I recently purchased the Spearhead expansion pack for Medal of Honor:Allied Assault. When i try to install it i get an error message, "Windows cannot find"Medal of Honor:Allied Assault Spearhead_code.exe" Make sure you typed the name correctly then retry. To search for a file, click start and then search." after that disapears another box appears saying "the registration number was not correct. installation cannot continue".
please help me, ive tryed the procedure to disable Rundll32.exe, but it still doesnt work!
thanks alot
Andy