to get shower plans use this cheat code B Z UP DOWN B, a cheat gnome will appear on the first island pier beach then quickly type, plus plus minus minus Z, the go up to the gnome and click "gimmie"...
You have to go to plans and click shower plans (when you have it unlocked) and then you click on whatever shower you want as long as you have the tools and skills for it.Hope it helps! :)
On your wii remote, press B, then on the control pad press Left Up Down Down Down Right Left Down. Then reboot the wii without saving and when you reboot your sims will be nude ;)
Make both sims relax in a double bed, then use one character and click the other then click WhooHoo or Try for baby. if you only have one character then you will have to make the other sim selectable...