Stumbled across a most excellent (yes, I watched Bill and Ted's Excellent Adventure) site for those not only interested in the search for extrasolar planets, but would like to help out, even as an amateur: Systemic: characterizing extrasolar planetary systems at <http://oklo.org>. From the "What is Systmeic?" section of their Website:
The near-term goal of the systemic research collaboration is to improve our statistical understanding of the galactic planetary census. This will be accomplished through a large-scale simulation in which the public is invited to participate. No prior experience or expertise with Astronomy is required. All you need is an Internet connection and a desire to learn and explore.Check it out!
Laughlin, Gregg. "What is Systemic?" Systemic: characterizing extrasolar planetary systems. Wordpress. 2 Jan. 2006 Web. 11 Sept. 2008. <http://oklo.org/?page_id=33>