The only alternative I know of for driverpacks.net is to get drivers from the OEM system maker or hardware vendor. (Other than backing up the drivers you already have installed.) I've never seen anything like this site before.
I see no reference to a similar service as of yet.
https://secure.wikimedia.org/wikipedia/en/wiki/DriverPacks
https://encrypted.google.com/search?q=driver+packs
I'm sure, this being a free service someone put together, that they (Wim) cannot afford the server space or bandwidth for such a project.
Why can you not use a torrent downloading application?