awesome dude, I was sent an inspiron 6000 for my 5150 initially when the thing fell apart on me 1000 times. Then they tried to screw me with the specs on the 6000, so I gave it to them, went through hell, as they sent people who put in the same video card and mother board, wasting my time. So I complained, and got another new computer sent to me, they said it would be the 2.0ghz pm with the same specs, it arrivved and it was the 6400, with 1.83 core-duo with intergrated video card. So I called again, yelled at them, and they are sending out the x-1400 for me.
So Dell will send you a new computer, a better one, because if they give you anything that is worse, simply complain and they will give you something better.
but man I want the xps, but there is no way to get it from blowing up my 6400. damn
Congrats on the XPS though, you got a really really nice upgrade, but remember as soon as it comes, if there is anything that is not to your liking, give customer care a call, and let them have it!!!