I want to install Mac OSX on my dad's laptop because Vista, which he currently has isntalled, is just dreadful. I have never installed OSX on any laptop let alone on a PC so I'll need your help.

Here are the specs:

LAPTOPS / SATELLITE / SATELLITE L40 SERIES / SATELLITE L40-139

Satellite L40-139
Part Number : PSL40E-02R00NEN
Key Features
- Intel® Celeron® M processor 520- Genuine Windows® Vista® Home Premium Edition- DVD Super Multi drive (Double Layer)- 1,024 (512 + 512) MB- 15.4 " WXGA TFT display
Processor type : Intel® Celeron® M Processor 520
clock speed : 1.60 GHz
Front Side Bus : 533 MHz
2nd level cache : 1 MB
Operating system
Genuine Windows® Vista® Home Premium Edition

System memory standard : 1,024 (512 + 512) MB
maximum expandability : 2,048 MB
technology : DDR2 RAM (667 MHz)
Hard disk capacity : 120 GB
certification : S.M.A.R.T.
drive rotation : 5,400 rpm
DVD Super Multi drive (Double Layer) compatibility : CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-R(DL), DVD-RW, DVD+R, DVD+R(DL), DVD+RW, DVD-RAM
maximum speed : Read: 24x CD-ROM, 8x DVD-ROM/ Write: 24x CD-R, 4x CD-RW, 10x HS CD-RW, 10x US CD-RW, 8x DVD-R, 4x DVD-R (Double Layer), 4x DVD-RW, 8x DVD+R, 4x DVD+R (Double Layer), 4x DVD+RW, 5x DVD-RAM
type : DVD Super Multi (Double Layer) drive
Display size : 15.4 "
type : WXGA TFT display
internal resolution : 1,280 x 800
Graphics adaptor manufacturer : Intel®
type : Intel® GMA 950
memory : up to 256 MB total available graphics memory with 2 GB system memory
memory type : shared
Internal video modes resolution : 1,280 x 800
maximum number of colours : 16.7 Million

Pic:


Where do I start??

Thanks!