It wont cost you anything except your time. Below are two sites that list several online charities (there is overlap).
http://www.thenonprofits.com/
http://www.cleanbreath.org/index.htm
I selected a few sites that I like and bookmarked them. Every time I am online I open them up and in a few seconds I have donated.
(I also want to thank all who post. I have picked up so much information from y'all! I can't thank you enough.):-)

