Well, if you have a valid/registered product key, you can contact discreet and ask them if they could send you a new software cd. Microsoft does this, I don't know if Discreet does. They charge a fee for the media and a shipping charge.
If your product key has not been registered then you're SOL. You'll have to buy 4.0 off of eBay or something. Or, you'll have to buy version 5, or 6.
I'll give you the benifit of the doubt and assume you weren't hinting at warez.
Quote: " Timesoft - Your wife is death. How? NO idea.
But it is murder. REVENGE!!!!!!!!!"
Hands down the funniest synopsis for a game ever. All your base are belong to us!