So I am thinking of using my year-end bonus from work to buy a notebook computer.

What I want:

A portable computer that I can 4 table on at a wifi hotspot.
I think with a 17" screen.
I also would like to network it with my desktop when at home.

My computer knowledge is relatively lacking... so I don't really know what I am talking about, let alone looking for.

Any suggestions?

I get a 12% discount on Dell products through my company... so I may go that route.
The only notebooks with >1600x1200 displays are EXPENSIVE though.