===My Hardware===
Processor: Intel Core 2 Duo E6750 @ 2.66GHz
Motherboard: Intel DG33FB
RAM: 1GB + 1GB (2GB) Kingston Value RAM
Graphics Card: Nvidia GeForce 8600GT
Sound Card: SB Audigy
Hard Drive: Maxtor 250GB Internal Hard Drive
CD-RW/DVD-RW: Lite-On DVD Drive

Using: Windows XP Profesional SP 2

I want to use Mac OS X , 10.5.X ONLY.
I dont want to keep using my XP.

What distribution do you recommend, so i have no problems when installing , etc ?.