Ask HN: How to target Europe w/ large file download server?

Decent size ecommerce site that sells large file downloads (>500MB). We've been using a .com hosted in the US for almost a decade. We have lots of Euro, Aussie, and Indian users that complain of speed. Our idea:

Server 1: hosted in USA - http://www...com Server 2: hosted in UK - http://www...co.uk

The problem here is that we don't want to "target by country". We want the .co.uk domain, for example, to be a signal to Google that "users of that region should use this server instead of the .com". Obviously geotargeting in GWT wants you to specify one country - this isn't realistic though since someone in Germany, for example, would far rather download from a server 1,000 miles away (the .in server) than one 9,000 miles away (the .com).

Suggestions?