If correctness isn't a concern and you really don't plan on changing it again anytime soon I'd recommend a product called "The Right Stuff". It's a black RTV gasket forming goop. You MUST clean both surfaces to perfection, Use Acetone on a clean rag as a final clean up and make sure your oil pan rails are flat and the holes aren't puckered up. Put a nice thick bead all around on the pan (keep the bead away from the inside edge as you don't want stray goop inside your engine), put some on each bolt as you put them in, and tighten to spec (read, don't over tighten the bolts!).

That sucker will be leak free!