San Jose Mercury News, Calif., Bits & Bytes Column By Rory J. O'Connor, San Jose Mercury News, Calif. Knight-Ridder/Tribune Business News SAN JOSE, Calif.--Jan. 12--The 800 or so computer mavens who forked over $25 each for tickets to last Saturday night's Digital Queers benefit party in San Francisco knew their money would help a favorite non-profit group and they'd get a few surprises and some laughs in return. But revelers got more than a $25 entertainment value when an unexpected guest took the stage at the Yerba Buena Gardens: comedian Robin Williams. Williams galvanized the crowd with a 15-minute routine poking fun at gay arch-enemy Sen. Jesse Helms, the Catholic Church and the Walt Disney Co., with whom Williams has a beef over royalties for lending his voice to the genie in the movie "Aladdin." Digital Queers co-founder and 3DO marketer Karen Wickre said Williams originally agreed to appear but didn't tell organizers he'd donate a performance until 20 minutes before he arrived. In gratitude, Digital Queers co-founder and Supermac Technology strategist Tom Rielly wanted to come up with at least a little trinket for Williams. A clever T-shirt wasn't digital enough. But when he spotted Apple marketing executive Michael Tchao near the stage, a deal was struck. Williams soon will get his own Newton personal digital assistant - along with personal training by Tchao.