Monitor out of frequency issues

So if the EDID is bad, how do I replace it? And, where do I find an updated version?
 

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Computer Manufacturer/Model Number
Dell XPS 410
OS
Windows 7
CPU
Intel Core 2 Duo 6700 2.66GHz
Motherboard
Dell
Memory
3 GB
Graphics Card(s)
nVidia 7950 GX2
Sound Card
Creative X-Fi
Monitor(s) Displays
Gateway FPD1975W
Screen Resolution
1440x900
Hard Drives
2 150GB in Raid 0 format
Keyboard
Ergo Keyboard
Mouse
Logitech MX510
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