As I understand the AAdvantage program (I'm a flight attendant. I'm paid to be cute, not smart.), unless at least 100,000 of those miles are recent (i.e. you are currently Executive Platinum), you probably will never be able to use those miles for upgrades. Reason being that there are not upgrade seats available. Executive Platinum (100,000 or more miles flown in last 12 months) passengers are automatically upgraded to F/C on a space available basis with no charge to their mileage accounts. A lot of EPs now book upgrade-able coach tickets when they know the particular flight almost always has F/C seats available, because they know they have a very good chance of being upgraded. I worked a flight recently where 12 of the 16 F/C passengers were upgrades. 11 of the 12 were EP.