Your kids may be too cool for schoolbut they're sure as heck going back anyway. Thanks to a new "Back-to-School" website created by Tribal DDB/Chicago for JCPenney, at least they can dress the part. The video-heavy site introduces visitors to a cast of fashionably attired teens and invites you to explore the musical, sports and pop culture influences scattered throughout their virtual rooms. And if you fancy the kids' fashions, the site offers one-stop shopping by letting you click individual styles and items for purchasing info.