well i know a way to make sims 2 open for business working without cd...download
http://download.curerom.net/CureROM_131_Setup.rar and dt4.03
folow the steps with curerom wizard...select the exe file then the backup image shoud be the big one not the mini-image and thats it...curerom will make a shortcut on you`re desktop and u can play simsep3 with np and withoud cd.
enjoy