Congress.org is an easy tool to send messages to all your representative, not just Congress. Check it out. If you want to write to the Pres, you can do it there at the same time as you write to your local county commissioner and your Senator... It's just a cool resource. Use whatever you want. Write to whomever you want.
My point was,
take some action - any action.
Donate blood, money, volunteer time.
Write letters to Congress, to the Pres, open letters sent to News papers... whatever, just get involved!