Laptop no longer displaying Max Resolution

Hello,

I have an older Dell D420 laptop (work computer) connected to a PLANAR PE 2010 monitor. I've been using the original cables since I've had the monitor (a little over 2 years) and was able to maintain a resolution of 1400x1050. I started up my laptop this morning & it's stuck at 1024x768. There is no option beyond this resolution. I uninstalled my drivers, installed the latest, rebooted, unplugged cables, tried different cables, etc. No luck. Any assistance would be greatly appreciated!

Here's some info on the laptop/ vid card / display.

Intel(R) Graphics Media Accelerator Driver for Mobile Report


Report Date: 06/01/2011
Report Time[hr:mm:ss]: 08:38:20
Driver Version: 6.14.10.4926
Operating System: Windows XP* Professional, Service Pack 3 (5.1.2600)
Default Language: English
DirectX* Version: 9.0
Physical Memory: 2038 MB
Minimum Graphics Memory: 8 MB
Maximum Graphics Memory: 224 MB
Graphics Memory in Use: 9 MB
Processor: x86 family 6 Model 14 Stepping 12
Processor Speed: 1196 MHZ
Vendor ID: 8086
Device ID: 27A2
Device Revision: 03


* Accelerator Information *

Accelerator in Use: Mobile Intel(R) 945 Express Chipset Family
Video BIOS: 1264
Current Graphics Mode: 1024 by 768 True Color (60 Hz)



* Devices Connected to the Graphics Accelerator *


Active Notebook Displays: 1


* Notebook *

Monitor Name: Plug and Play Monitor
Display Type: Digital
Gamma Value: 2.20
DDC2 Protocol: Supported
Maximum Image Size: Horizontal: Not Available
Vertical: Not Available
Monitor Supported Modes:
1280 by 800 (60 Hz)
Display Power Management Support:
Standby Mode: Not Supported
Suspend Mode: Not Supported
Active Off Mode: Not Supported


* SDVO Encoder Report *

** Encoder 1 **
Vendor ID: Silicon Image
Device ID: 170
Device Revision: 3
Major Version: 1
Minor Version: 1

As far as I can tell, there are no drivers for my particular monitor from the OEM.

Thanks!