You contact Bank One to transfer the points. You can do it over the internet (this is easiest) or call the 800 number. They will send you another card that "holds" the points. This card expires quickly (in like two years), unlike your points, which are typically five years. In other words, don't transfer more than you know you will use. Then you would just give guest services your "points" card to use the dollars that are on there.
Did that answer your questions?
Oh, no, you can't put points back on your card, so again, don't transfer more than you absolutely know you will use.