E-mail searches?

Ok, I've searched all over google,yahoo,etc... to find a site that allows you to search for people's e-mail address's. Yahoo has a thing but it's only for yahoo.com e-mail address's, and there are plenty of sites but most of them are weirdo stalker pages that make you pay. I'm trying to find a couple of friends from different area's who i haven't talked to in like 10 years. So does anybody know of a FREE service that you can search for e-mail addys? Any help would be greatly appreciated. Thanks Peace-

Try Addresses.com