Having Trouble Installing The Sims

Help! I am having trouble Installing The game The Sims...when i click on install it says...The Win16 Subsystem was unable to enter Protected Mode, DOSX.EXE must be in your AUTOEXEC.NT and present in your PATH...?? please i really want to play this game! can someone please help me fix it?...thanks
 
Win16 subsystem?

This is the original game CD you are running the installer from, right?
 
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