Okay so i have an extremely slow internet connection, but it seams to download LFS just fine but when I go to extract it. It says it is not a supported archive. I tried downloading it several times now and all came up with this problem. I am stumped. Any help would be welcome.

What's the filesize of the archive you're trying to extract. It's possible that the archive has either become corrupted while trying to download it or you've only got a partially downloaded file. You could try using a download manager to get it.