I'm wondering what is the best way to go about installing Gal Civ II: Dread Lords on my new computer with Vista 64-bit. I have the original retail CD, but I'm sure there are updates since then, especially for Vista 64-bit. When I check My Account -> Registrations, I see a line with Gal Civ II: Dread Lords (download). Clicking on the icon in the Download column brings me to an About Impulse web page, though.
So anyway, what's the best way to install GC2 on my computer? In case it matters, I'm thinking of downloading the Expansion Bundle (DA & TA), but I figure I need the original installed first.
Thanks in advance 
AndonSage