I have a Dell D630 Laptop, my configuration is:

ACPI x86-based PC (Mobile)
Processor: Mobile DualCore Intel Core 2 Duo T7700, 2400 MHz (12 x 200)
Motherboard: Dell Latitude D630
Video: Mobile Intel(R) 965 Express Chipset Family (384 MB) Accelerator: Intel GMA X3100
BIOS: A17ver
Audio: SigmaTel STAC9205X @ Intel 82801HBM ICH8M - High Definition Audio Controller [B-0]
Ide Controller:Intel(R) ICH8M 3 port Serial ATA Storage Controller - 2828
Intel(R) ICH8M Ultra ATA Storage Controllers - 2850
HDD: Hitachi HTS721080G9SA00 ATA Device (80 GB, 7200 RPM, SATA)(i'm gonna buy a 320 GB/5400 RPM these days)
LAN: Broadcom NetXtreme 57xx Gigabit Controller
WI-FI: Intel(R) Wireless WiFi Link 4965AGN
USB Controller: Intel 82801HBM ICH8M - USB Universal Host Controller [B-0]
O2Micro OZ776 USB CCID Smartcard Reader

What should i know before i start installing the new OS?
What version of the MAC OSX do you recomend to me?
iAtkos, iDeneb, Kalyway ? Or other versions?

I looked for dell d630 on this forum but i didn't found any guide for me.
Please give me feedback.