Hi.. Medical drugs are only part of the treatment.. You need regular counselling and support from friends.. The best way is to get counselling and may be CBT at a rehab centre.. You may also use the facility of the web in getting information and therapy on line.. I shall give you a few links on this.. Hope you find it useful...
http://depression.about.com/cs/findadoc/a/freelowcosttx.htm
http://psychresources.net/