The path for this is:
Computer:>C Drive:>Program files (x86):>Electronic arts:>The Sims 3:>The Sims 3 Your last installed game:>Game:>Bin:>TS3EPx (x is the number of the EP so Island Paradise is 10).
You right click on your desktop then select "New" followed by "Shortcut". You will be prompted to type in the path, or (recommended) browse for the path. A new icon will appear on your desktop which you use instead of the official icon.
I use this all the time to play The Sims. When you load the game, you will be prompted to connect, just say no.