Please use this search engine, it donates a cent for every search to the charity of you choice, which can really add up (For you Brits, that's like .005£, I think...(I even went to character map to get your bloody symbol
). I chose Narcolepsy Network. It is through Yahoo! so it is a full search engine.
When you go there you just have to set your charity then all you need do is do your regular searches.