Welcome to the forum. I used the "Dealer locator" at teamvanguard.com cause I couldn't remember the name of this store. I've been to Svendsen's, and in addition to selling Lasers, they are a full chandlery. I love hardware stores, and what could be better than a BOAT hardware store!
SVENDSEN'S BOATWORKS 1851 CLEMENT AVENUE
ALAMEDA , CA 94501
If you're looking for used try Craig's List. At the moment there are two older boats (one at least is older than the one you had 25 years ago. . .).
Sometimes people spread the word about boats for sale on the District 24 e-mail list so you might want to sign up for that, it's also a great way to hear about upcoming races, clinics, practice sessions etc. There are 3 pretty active fleets within the Bay Area -- St. Francis YC, Shoreline and Treasure Island Sailing Center. TI is the site of the 2007 Pacific Coast Championships so we're hoping for a great turnout this year when the Thursday Night races resume on April 5! (go to the District 24 page on the class website for more details).