I'm sorry for your experience with Linux, it does need some patience and dedication to learn it...
Well, the CD version of Sabayon 3.5 is the most "expert oriented" version, it does need some knowledge,
I suggest you to try with the 4.1 Gnome or KDE4, the 3.5 version is quite old.
If you don't want to use a DVD, and have a capable enough USB drive, you could also try to
install it from a USB drive, using UnetBootin.
see also: http://forum.sabayonlinux.org/viewtopic.php?f=50&t=15875