Small pool vacuum adapter plate

[Buckeye5]

I have a 12' round above ground pool that we bought from Walmart, and I'm trying to hook up a manual vacuum to the pump hanging on the side of the pool. Ours is a square basket and all of the adapter plates I see online are round, does anyone know what I need to get to make this work?

[PoolDoc]

I assume you have a Summer Escapes pool? You may want to go through their online store, though I'm not sure they'll have what you want. This thread has their contact info and websites:
http://www.poolforum.com/pf2/showthread.php?21718

Most of the Intex pool parts I've seen are Intex only, and don't fit Summer Escapes, which currently seems to be a Walmart and Sams Club product, with little support elsewhere.