I had to reread the following story because, at first glance, it seemed completely 100 percent fabricated: netlet the CW is developing an updated spin-off of Beverly Hills 90210 . Before you start to get images in your head of Brandon and Brenda's Minnesota cousins moving to BevHills and enrolling at the local lycee under the tutelage of, say, Gabrielle Carteris' Andrea, let's pause for a second to remember that one of the all-time great primetime soaps-- Melrose Place , natch--was a spin-off of the hallowed zip-code series that could and didn't feature any characters from the original flagship series. (Though remember how Jennie Garth's Kelly turned up at first following Jake around like a lovesick puppy?) While Beverly Hills 90210 creator Darren Star won't be involved with the series, The Hollywood Reporter says that the CW is in talks with Veronica Mars creator Rob Thomas to write the pilot script. And if anyone knows the sophisticated teenage class warfa