Maybe a silly question, but I want to upgrade OS X and am currently running Tiger 10.4....Apple's site says from 10.4 I should buy some box package that comes with Snow Leopard 10.6.3 and iWork. I already have iWork. Snow Leopard alone is only $29 for an upgrade. Is it possible to just go from 10.4 to Snow Leopard with the $29 upgrade? Or is there something in this box package version that I actually need along with the other stuff I don't need? I've been checking around Apple's site and seem to be going in circles without finding a definitive answer. Thanks for any provided.