Where can I buy a futon cover?

FBIL and his wife gave us their old futon until we can afford some furniture (saving for the wedding and paying the mortgage takes its toll).

It had a yellow floral cover which I didn't like. So I took it off and we've been using it with just the regular beige mattress, no cover. Well, my black cat has made a mess of it. I will clean it today, but I want to get a cover to make it easy to clean in the future.

I've found www.futonsstore.com , but I was wondering if anyone knew of any places on LI where I could go. I looed online at Kmart and Linens N Things, but my search returned nothing.

Anyone? Anyone? Bueller?

there is a futon store in pt jeff going downport - we looked there for a futon once and it was pricey but they should have covers cheaper....

also what about ikea??? national wholesale liquidators?? kohl's??