A really good site to try for a language exchange partner is:
japan-guide.com - Japan Travel and Living Guide
There are a lot of Japanese on the site that are looking for someone to help them with their English and they offer their help in learning Japanese. It's a really good site I think and it is completely free. You just have to make an account with them. I use this site a lot when I am looking for a language exchange partner
Hope it helps
