Where to get sports medical stuffs?

Found out that my left knee's ACL ligament is messed up and I'm going to have to get a support for it till it heals and I strengthen the muscles inside. I was told they have knee supports at sports stores, but... not really sure where they are!

Anyone know a place that you can find such things?

We have a sports store at our mall called Sports Authority. Seems like a big chain. Have you also tried large pharmacy/drugstores?

I finally found a spot, actually at a fitness exercise store. It was among the random crap that is actually outlawed in the US cause the stuff was just gimmicks XD