someone plz help me to install SNOW LEOPARD 10.6.2 on My laptop.

Configuration is
Lenovo Y550

· Intel® Core™ 2 Duo processor T6600 ( 2.20GHz 800MHz 2MB )
· Genuine Windows 7 Home Premium 64
· 15.6 " HD Wide LED 1366x768
· NVIDIA GeForce GT 240M 1024MB
· 4 GB PC3-8500 DDR3 SDRAM 1066MHz
· 500GB 5400
· DVD Recordable (Dual Layer)
. Intel Wireless Wi-Fi Link 5100
. Broadcom NetLink (TM) Gigabit Ethernet