Ubuntu has always, by default, comprised of GNOME as its desktop environment. The upcoming latest model of Ubuntu (Natty Narwhal version 11.04) will now be using the 3D-enabled Unity desktop by default which will be accompanied by the Wayland graphics system. This one too is based on GNOME thereby it won’t be a problem for [...]
You don't need to have a wireless kernel module loaded if you're on Ethernet LAN. This task is complex and will require a kernel recompilation, which unfortunately is not the easiest task to accomplish.