For a band that doesn't really exist, Drive Shaft sure is getting a lot of exposure.The fictional rock group of Lost castaway Charlie (played by Dominic Monaghan) was featured in a flashback episode in the fall, and the band's single "You All Everybody" was recently heard blasting from Sydney's stereo on Alias, another ABC Wednesday-night show. There's a music video at www.abc.com, and even a faux fan website, www.driveshaftband.com, complete with bios, photos, a discography and dedications to its missing bassist. "We've been talking about putting out an official album," says Lost executive producer Bryan Burk. Groupies can catch the band again in Lost's Charlie-centric installment next Wednesday at 8 pm/ET. "As long as Lost is alive, so is Drive Shaft," Burk promises. Rock on.