I have recently figured out that my Laptop support Mac OS X Snow leopard . . I find that out from OSX86 Project
HCL 10.6.0/Portables - OSx86

I have Dell Inspiron 1564 and my specs are . ..
CPU - Intel core i3 330M 2.13ghz.
RAM - 6gb DDR3 1066
HD - WDC 320gb 5400rpm sata.
Graphics - Intel HD Graphics.
Audio - Intel HD Audio.
WiFi -Broadcom 802.11g Network Adapter 54 Mbps.
LAN -Realtek PCIe Family controller.
Touchpad - Dell touchpad.
Dell Integrated webcam and SD/MMC card reader.

the above link shows
Install Method: SNOWLEO MAC Snow Leopard OSX86_64 For INTEL/AMD

how can I easily install snow leopard on my lappie. . any detailed and step by step method?

I really don't know much about installing MAC to a PC. . i just read a couple of blogs regarding installation. . but i found no instructions precisely for my Laptop. . .

Is there any way to dual boot snow leopard with with win7?
I am currently using win7 but i have an extra partition of 100 GB available for mac . . .is there any possibility?

Any help would be highly appreciated. . .and thanks a lot in advance !. .