Well, you can do it with or without setting up a DHCP server. If you want to do it with a DHCP server, you can try to apply this (http://www.geeklan.co.uk/?p=26
) to a single Slackware box. I decided to forgo DHCP because I'm just installing to one iMac (and not very often) and I already have a separate DHCP server (a router, actually). The following applies to two systems running Debian Sarge and Mac OS 10.3 under one router.
1) First you'll want to setup a TFTP server (I used the tftpd-hpa package) and an NFS server.
2) The default location for the TFTP server root on my system was /var/lib/tftpboot. It may be different on Slackware, so of course, change at will. But this directory is where we're going to put all the important files. Three files come from the Mac OS X disc (although you'll have to rename two of them) and the fourth is a simple image of the Mac OS X disc itself. So...
3) Mount the CD and copy and rename the following files into your TFTP server root:
cp /cdrom/System/Library/CoreServices/BootX /var/lib/tftpboot/BootX (not actually renamed)
cp /cdrom/mach_kernel /var/lib/tftpboot/mach.macosx
cp /cdrom/System/Library/Extensions.mkext /var/lib/tftpboot/mach.macosx.mkext
4) Unmount and make a simple image of the Mac Install CD in the TFTP server root.
dd if=/dev/hdc of=/var/lib/tftpboot/panther.img
5) For your NFS server, you'll want to modify /etc/exports (or wherever your exports file is) to include something like the following:
where mac-ip-address is that which was assigned to the mac by the DHCP server.
6) Of course, at this point, you'll want to restart the TFTP server and NFS server.
On the Mac
7) Boot into open firmware (by holding command+option+O+F) and issue the following commands:
setenv boot-device enet:ip-address-of-linux-server,BootX
setenv boot-args rp=nfs:ip-address-of-linux-server:/var/lib/tftpboot/:panther.img
Where ip-address-of-linux-server is... self-explanatory. The familiar boot up sequence should start except now you have a little spinning world as it tries to make a connection with the Linux server. You'll probably want to hold command+V while booting the Mac to see what's actually happening and to assure that the whole process went smoothly. That... should work. I hope that helped (and that I didn't forget anything)!