There are a few ways...
Each year the NFL will have a public lottery and you have to submit your name via old fashioned postal mail. If chosen you then have the opportunity to buy the ticket(s) (not sure if it is one or two).
Then there is
www.ticketreserve.com which is abit like buying a lottery ticket. If the Saints make it to the big game you can then buy the ticket at the price your option was priced at. If they don't make it you lose out. Oh yeah you can sell your option as well. Current Saints options are going for
http://www.ticketreserve.com/eventM...ugid=696398000&teamId=17&leafId=T17E700009698
to next years Superbowl.