Hi Christo. To ensure that we have the right problem, you have an existing (original?) wheel and you bought a new cassette (shown in the Amazon ad you cited). The cassette fits the wheel. You want to replace that wheel with one that the new cassettes. Why are you replacing the wheel?

Also, ERD means "Effective Rim Diameter". Its the diameter that the spokes have to extend to. If you have the hub dimensions (number of holes, spoke hole circle diameter, flange spacing) and the ERD you can figure out spoke lengths needed.

But you want a new wheel. So... why?