I assume that you are talking about buying a NEW liner, to do this with?

I'm not an AG pool expert, but this page makes it sound like you can convert a beaded pool to an overlap one:
http://www.poolsaboveground.com/stor...ol-liners.html

I think your best bet is to find a seller of the liner you want, and then ask them what it will take to make your pool work with their liner. Their advice on a topic like that is probably going to be your most reliable info.

Ben