You should probably go over to the rent/trade board and read as many posts as you can to get an idea of what things are going for. In most cases the farther in advance you rent your points, the more they are worth. For example if they are only good until March of 2003, then they are not worth as much as points that are good for all of 2003. Good luck, there seems to be quite a few people renting points right now.
HBC