seems things check out (shrug)
------------------
System Information
------------------
Time of this report: 2/10/2011, 15:03:28
Machine name: SCOTT-PC
Operating System: Windows Vista™ Home Premium (6.0, Build 6002) Service Pack 2 (6002.vistasp2_gdr.101014-0432)
Language: English (Regional Setting: English)
System Manufacturer: DELL Inc.
System Model: XPS 730X
BIOS: Default System BIOS
Processor: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz (8 CPUs), ~2.7GHz
Memory: 6134MB RAM
Page File: 1359MB used, 11124MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
DxDiag Version: 7.00.6002.18107 64bit Unicode
------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Sound Tab 3: No problems found.
Input Tab: No problems found.
--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)
---------------
Display Devices
---------------
Card name: ATI Radeon HD 4800 Series
Manufacturer: ATI Technologies Inc.
Chip type: ATI display adapter (0x9442)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_9442&SUBSYS_05021028&REV_00
Display Memory: 3816 MB
Dedicated Memory: 1005 MB
Shared Memory: 2811 MB
Current Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor: SyncMaster 226BW(Digital)
Driver Name: aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Driver Version: 8.17.0010.1052 (English)
DDI Version: 10.1
BGRA Supported: Yes
Driver Attributes: Final Retail
Driver Date/Size: 10/26/2010 21:54:22, 645120 bytes
WHQL Logo'd: Yes