This is the price point that I shy away from AMD/ATI and start recommending intel. As a result I also start recommending nvidia due to sli support on p55 mobo's. Anyways for second life a cheaper PC would suffice, but the one that amw1011 has picked out is great.
Thanks for the suggestion of the computer, looks solid- and as for Second Life being okay with a cheaper PC, my roughly $800 setup (this build is for a friend) runs MW2 flawlessly, maxed out, and struggles with Second Life sometimes. I guess it's the OpenGL and all the information that's out there.