I bought fallout: new vegas retail here in Australia yesterday and am trying to install it via steam, but when I run the install, attach it to my steam account and etc instead of installing from disc and updating the 185MB patch, it wants to download a 7GB "Upate". Unfortunately living in Australia I cannot download a 7GB update and just want to get it to install from disc, any ideas?

Edit: Mod can delete / close this, was an issue with installing from (E:) drive and not (D:)