Im running Windows 7 home premium on HP Pavillion Dv6 laptop.
It has Intel Core I5 520m 2.4ghz CPU.
640gb sata
4gb Ram
Nvidia GeForce GT 230m 1.2gb

Basically I Downloaded IPC 10.5.6 final
I burnt the iso to a Dvd adn tried to run it via boot from Cd/DVD.
It worked or so it seemed to darwin did its thing but it got to grey screen then apple icon appeared but 1 second after that my system restarts.
Happens everytime i try.
Not sure if this problem is common i havent checked all forums but please any help with this would be Great.

You should check the forum posts/threads first before asking question, as there are so many similar ones answered.
Go with SL for better hardware support, as Leopard won't do much for your system configuration.