The hearings on Pipes nomination are being held by the US Senate Committee on Health, Education, Labor, and Pensions. If you are a Massachusetts resident, Senator Kennedy (shudder...) is the ranking Democrat. You can email him here: senator@kennedy.senate.gov. The website of the committee is here. There is a mailing address here, and also a link to the list of senators you can email. I strongly urge you to drop these guys a line as well. It makes a serious difference, and don't think the other side hasn't thought of this as well. Go. Do it. Now.