now i also installed enlightenment so if i want to uninstall gnome and just use enlightenment what would be a good replacement for gdm and what part of the initab would i place the
Dont, you dont need to uninstall anything. For starters, GDM makes for a graphical login. Using E17 is done after GDM is passed. Besides, some stuff could rely on Gnome stuff. For example, I use XFCE, and that uses some Gnome stuff. I use GDM for graphical logins, so, I'd not uninstall it...
I'm not familiar with Sabayon, but in Arch, you'd add this line to .xinitrc:
And that should do. By the way, E17 is still somewhat experimental
. A gorgeous, but still experimental, beauty...