The "SOAD-Linux.i686-3.3.1.iso" is a hybrid "iso", capable 
to be installed on USB sticks or burned on CD/DVD as well.

Please read a brief explanation below:

http://lizards.opensuse.org/2009/08/05/hybrid-live-systems/


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to burn an "iso" on CD/DVD use your favorite burning software.
example:

 > wodim -v dev=/dev/sr0  $PATH_TO/SOAD-Linux.i686-3.3.1.iso


to dump an "iso" on USB stick use "dd" command (don't forget to
BACKUP all important data first!):


 > dd if=$PATH_TO/SOAD-Linux.i686-3.3.1.iso of=/dev/... bs=32k


it will create a primary partition with a size approx to 700Mb.
if you wish the changes to be persistent - you need to create
another (second) primary partition with "fdisk" identified as 

"0×83 (linux) type"

the (third) "vfat" primary partition could store data and exchange
between Linux And Windows for example. you're welcome to give it a
try! sure, you can have even "extended" partition - it'll work in
Linux. the limits are a standard for "MBR Partitioning Schema":

 * up to 4 primary partitions
 * up to 23 "logical drives" inside "extended" partition.

have fun!

regards,
SOAD Team