Thanks for downloading from Sim Terrific 
"http://www.simterrific.cjb.net

You have to have winzip when you downloading from Sim Terrific
extract them in this folder:

Skins: c:\Program\Maxis\The Sims\Gamedata\Skins
Objects: c:\Program\Maxis\The Sims\Gamedata\Objects
Walls: c:\Program\Maxis\The Sims\Gamedata\Walls
Floors: c:\Program\Maxis\The Sims\Gamedata\Floors
Houses: c:\Program\Maxis\The Sims\Userdata#\Houses

Thanks again.