I have a PC with following configuration:
1. Intel Core2 Quad Q6600 2.4GHz
2. nVidia GeForce 8800GT 512MB
3. Intel G33 Chipset MoBo
4. 3GB RAM
5. 350W PSU from Delta Electronics Inc.

I am planning to upgrade my graphics card. Anything better than 8800GT but price lesser than (Rupees 10000) preferred. My problem is that it should work without changing PSU.