I got the same problem as the threadowner. Booting from external USB-DVD-Drive was no problem, but in sysinstall there was no way to install from usb...
Anyway, i usually prefer to install via nfs. All you have to do is to download the iso, set up a working nfs-server on another pc in lan (i.e. in ubuntu, bsd, etc.), mount the iso there, export it and boot from there. I think it is also possible via vm (means that you are running *nix with nfs-server on win). Other options are http or ftp. but nfs is easier to do
Anyway, i usually prefer to install via nfs. All you have to do is to download the iso, set up a working nfs-server on another pc in lan (i.e. in ubuntu, bsd, etc.), mount the iso there, export it and boot from there. I think it is also possible via vm (means that you are running *nix with nfs-server on win). Other options are http or ftp. but nfs is easier to do