Download sources, doing LFS offline?
 

I have a dial up connection. Is there a way to download the basic sources, along w/ dpkg/apt, and then use the debian CDs for other package installation? I have read most of the book, but don't want to try anything if I have to keep downloading stuff.

So what are you doing? LFS and then putting apt-get on it? You can download the LFS sources as on big tar file (look under the packages link on the LFS news page). If this is a pure Debian question, then I don't know what you're asking. I don't know how well apt-get will react to being put on an LFS system either. Plus, why do LFS if you're just slapping apt-get on it to make it pretty much Debian anyways? There are much better source install managers for LFS if that's what you want.

I'm wanting to do LFS, but I don't want to have to build KDE etc. from source. My questions is, can I build LFS offline, then give it apt-get in order to access the debian binary packages?

Well, I don't know how hard it would be to put apt-get on top of LFS, but you can convert Debian packages to a tar.gz and extract it, or I'm sure KDE probably has binaries available.

I have a debian CD set, so I don't want to download binaries online, because I have dialup. Thoughts?

Well, those CDs likely have the .deb files which can be converted to a tar.gz if you download the small utility from http://downloads.linuxfromscratch.org/deb2targz.tar.bz2

ok, would it affect lfs at all? because they probably wouldn't be considered 'pure' or anything like that(e.g. debian apllies patches).

The patches shouldn't affect anything. The only problems that may arise are you'll have to figure out the dependencies and it may require some exact version that isn't the most up to date.