I've been waiting for Dell to release a new driver for my laptop's nVidia 8400m gs video card since I bought my laptop. The driver provided by dell is pretty outdated; it was released 12/14/2007.
After waiting passively for a few months for them to release drivers I looked around google and found laptopvideo2go. This site releases edited versions of the new nVidia forceware drivers for you to download. My first attempt at installing the drivers with the "have disk" method resulted in a resolution of 640x480 with 256 color -- didn't work. After a bit of reading laptopvideo2go's forums I found the correct way of installing the drivers:
- Download the video driver from dell's support page. The WinXP 8400M GS driver can be found here.
- Run the executable you downloaded and it will extract the files to C:\dell\drivers\ by default.
- Download a modded inf file that is compatible with your video card and OS. You can find a list at the laptopvideo2go forums.
- Open the inf file found in the dell driver folder (mine was labeled "NVDM.inf") and the modded inf file you downloaded from laptopvideo2go.
- Replace the value for CatalogFile in the modded inf file with the value found in the dell driver inf file, save, and close.
I had to replace "CatalogFile = NV_DISP.CAT" with "CatalogFile = NVDM.CAT"
- Replace the dell driver inf file with the modded inf file by renaming or deleting the original dell inf and moving the modded inf file into the dell driver directory and renaming it to what the original inf file was named.
- Run setup like you normally would and it should install.