xorg on FreeBSD 9.2

[ajtiM]

Hi!

Today I installed FreeBSD 9.2 RC3 (amd64) on iMac:
Model Name:	iMac
 Model Identifier:	iMac11,1
 Processor Name:	Intel Core i7
 Processor Speed:	2.8 GHz
 Number of Processors:	1
 Total Number of Cores:	4
 L2 Cache (per Core):	256 KB
 L3 Cache:	8 MB
 Memory:	8 GB

ATI Radeon HD 4850:

 Chipset Model:	ATI Radeon HD 4850
 Type:	GPU
 Bus:	PCIe
 PCIe Lane Width:	x16
 VRAM (Total):	512 MB
 Vendor:	ATI (0x1002)
 Device ID:	0x944a
 Revision ID:	0x0000
 ROM Revision:	113-B9110C-425
 EFI Driver Version:	01.00.383
 Displays:
iMac:
 Display Type:	LCD
 Resolution:	2560 x 1440
 Pixel Depth:	32-Bit Color (ARGB8888)
 Main Display:	Yes
 Mirror:	Off
 Online:	Yes
 Built-In:	Yes
 Connection Type:	DisplayPort

I like to install Xorg and KDE4. I read about new radeon drivers, KMS. but I don't know how to install Xorg. Do I need to put in make.conf WITH_NEW_XORG or not, please. Do I need to rebuilt kernel with KMS support?

Thank you very much.

Mitja
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