ahem, go buy a book on linux, best advice i can think of. its what i did when i chucked windows completly several years ago. not to mention having a bit of modavation when trying something new.
and for the record, kde is not only faster then gnome, but more intagrated in a good way. it is completely network transparent, wheris the only networking i see in gnome is corba...and thats so it can talk to itself.