Step 1. Patch your game if you haven't already.

Step 2. back up the file  "WantsTuning.package" located in one of the folders listed below:

If you have FFS, or EP3 & FFS
For FFS Only or EP3 & FFS
"C:\Program Files\Ea games\The Sims 2 Family Fun Stuff\TSData\Res\Wants"

For EP3 only
"C:\Program Files\Ea games\The Sims 2 Open For Business\TSData\Res\Wants"

For EP3, FFS & GLS or just GLS
"C:\Program Files\Ea Games\The Sims 2 Glamour Life Stuff\TSData\Res\Wants"

Step 3. place the file "WantsTuning.package" in one of the folders listed above for which EP you own(i.e. if you have ep3 & ffs use the ffs folder).

Step 4. Place the file "Woohoo.package" in  the folder "My Documents\EA Games\The Sims 2\Downloads"

*** Very Important make sure you back up the file listed in step 2 you will need to restore that file before installing any new patches,addons or expansion packs for your game ***