Assuming they are 2008 points so you *can* bank them (and I've no reason to think otherwise, but just in case) then, if you bank them, you can use them from June 1 2009 through May 31 2010. You have until the end of January 2009 to bank them. If there's the slightest possibility you might use them between now and the end of May of 2009, don't bank them right away. Once they've been banked, you cannot use them during the 2008 UY nor can you transfer them to someone else.