February 20, 2003
MOVEON.ORG has made it easy for you to express your support for the war. Just go here and register. There's also some advice here.
UPDATE: Yes, I know that MoveOn is an antiwar group. But you don't have to be antiwar to use their site. . . .
Nukevet has more advice.
ANOTHER UPDATE: Stefan Sharkansky is organizing a Virtual March on Hollywood!