I created a LiveCD for LFS 7.1 out of Gentoo.
I was able to use it on VmWare Workstation, VirtualBox and real PC.
I was able to complete LFS 7.1 successfully with it.
I made a YouTube video of it to explain how to use it.
I hope this can be useful to all of you as it was for me.
http://youtu.be/SzaFNOoGGrw?hd=1