Where would oil be leaking from if it's the valve cover gasket?

Valve cover gaskets are below the tinny covers over the heads. Never worked on a V-6 Vitara, but here is a pick of a Chevy 350. http://www.enginefactory.com/350massflo.htm where it says Chevrolet with the chevy sign, those are the valve covers.Usually only a few bolts to pull off, gaskets are cheap. ANyone with a better pick?