There isn't the ability to input a space on the dial pad. The Galaxy S will offer suggestions of who you want to call based on what you are typing. For instance, if you want to call John Doe Smith you would start typing 5, 6, 4, 6 and the phone will display a contact named John in your phone book. But, if you have more than one John there will be a box to the right of the name with a number in it to indicate how many more John's there are. Tap on that to select which John you want to call.