Hi Geordie502 and welcome.
800 to 1000k is possible from UK & Euro sites in a single stream, but not generally from USA sites, I get between 400-700k in a single stream from most large USA sites, and can get 1200 from UK sites.
Of course using a download manager and opening several streams can help enormously.
Try the 50megfile from here:
http://homepage.ntlworld.com/testmyspeed/ and see what you get.
cheers
Ian