Can anyone suggest a good laptop??

Hi!
I am looking for a laptop with the following configuration
1. Intel Core 2 Duo processor(>=2.4 ghz)
2. RAM >=3GB (preferably DDR3;DDR2 will also do)
3. A dedicated Graphics card having 512 MB memory.
4. Screen Size atleast 15.4 inch
5. A 320 GB Hard Disk 7200 rpm
I will be using the laptop for both intensive Gaming and Graphics related work and my budget is around Rs.70000.
I had initially shortlisted the Dell Studio XPS 16,but now i came to know that it heats up pretty quickly and has a poor battery life.