October 2007 Midrange Buyer's Guide
 

Depending on whom you're talking to, midrange can start as low as $1000 and extend all the way up to around $2000, which undoubtedly gives a lot of flexibility in terms of choosing components. We're going to split the middle and shoot for about $1500 for each of the systems we configure today, which will include everything that's necessary for the intended market. You can spend more or less than that with a little bit of effort, and certainly those who are looking to reuse a few components from their current system will be able to save some money.

http://www.anandtech.com/guides/showdoc.aspx?i=3125

Good choices, Intel CPU, 8800 GTS 320Mb GPU, 2gb Ram