yea, tell me about it, i'm in a 56k, and when i had NT4, i had to download SP6, and i think it had to be at least 35MB, but it was one .exe file. i read something on a website i visited about Windows Whitler and Service packs, here it is, i dunno if it'll help you though:
......."MS has now decided that these current releases are builds made to go towards Windows 2000 SP1, and after it's released, MS will keep making more builds to go toward windows whistler, but for now its about windows 2000 sp1, dosent look that different than win2k. Sooooo, the new GUI aint been started just yet, they lied, MS is working on Whistler, and going to pop out win2k sr-1 with one of the builds they are using for whistler later on, new GUI should be starting to take form in up coming builds..."
Here's the link to that website:
http://jotenet.koti.com.pl/start/home.htm