Dell Business has the PNY GeForce 7600 GT 256 MB GDDR3 PCI-E Graphics Card for $162 - 15% code 56XP$0CFBZ3BV5 [Exp 7/31] - $20 rebate [Exp 7/8] = $118 with free shipping. Item A0633991.
http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=bsd&cs=04&sku=A0633991
http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=bsd&cs=04&sku=A0633991