Well if remembering is a problem then connecting via USB is the best bet. Bet you wouldn't have to forget too many times before it finally clicks.
Below is a quote from another site that may help in getting the camera and Win7 to communicate with each other.
"Dutch Canon support reacted really fast and suggested to go to the menu on the Camera, select a tap (on mine the last tap) where you get the "communications" item
change this from "normal" to ptp and off you go.