Unfortunately, this is a pretty normal temperature for Intel's latest cores (Prescott). It's also the main reason I've made the switch to AMD, something I would have considered impossible no less than a year ago. I still like Intel though, and plan on returning to them once they clean up their act and produce good, solid and low-temp cpu's again, just like they've always done in the past.

But to answer your question: I doubt there's much that can be done about those temps. Not with a quiet fan, or without the aid of a watercooled setup anyway...