I'm writing up a small guide on TFTP/DHCP because it is usefull, not only as alternative installation method (MIPS even requires it) but also to ease the managment of many workstations on large(r) networks. The guide won't be very big, but that might be an advantage :)
Sweet...I just helped a friend install on a Sparc64 w/ no cdrom or floppy and we ened up doing a Debian net install since they had good instructions, then starting the Gentoo install once Debian booted. If we could have just got right to Gentoo it would have saved us some time.
Darn, we apparently already have all the tftp/dhcp information in the diskless-howto.xml