Well... as a programer, i suggest this.
Make another database ment only for points. Keep track of where the points were bought from. Then connect all you forum databases to this one. If you creat a simple log file of say:
Points Bought 6/3/03
Then no matter where they buy them, the tut designers still get there money, and your customers can access there points from any place.
It realy shount be that tough. Mabey when you done with MAX and all of maya's promissde upgrades, youi can work on this.