fairgrounds in pleasantton. car owners began arriving two hours ago, and organizers expecting more than 3,550 hot rods and custom cars from 20 statesare do-it-yourselfers, ready to show off years of hard work. >> i just finished my car in april. i've been looking forward to coming down here for years. this thing took me 7 years and two months. >> 7 years and two months? >> yes, sir. i did it all except for the upholstery in the past, the show only open to 1957 or older vehicles, but this year you'll fine classic american muscle cars from the '60s and early '70s. look at those. the show is open through sunday. >>> well, a bay area organization that helps both children and horses is getting ready for its biggest fund- raiser of the year. the foundation connects children in crisis to rescued horses at its training center. these horses are trained to go into hospitals, taken to hospice centers to visit terminally ill children. tomorrow's fund-raiser will provide a horse show, auction, lots of wine and beer, food and a good time. happens tomorrow at the charles will help training center in castro valley. tickets are $75 a piece. you can