I just got a new 24" monitor (the Dell 2407WFP-HC), and I had to set it up as an external display for my Toshiba Portege M200 Tablet PC. Unfortunately, the video drivers on my laptop didn't support the native 1920x1200 resolution of the monitor, even though the video card (an NVIDIA GeForce FX Go 5200) could do so. Furthermore, Toshiba is quite lax about updating the official video drivers for the laptop, and NVIDIA artificially cripples their official drivers so they don't work on older cards by default.
Fortunately, there's a web site dedicated to solving these problems: Laptop Video 2 Go. The site provides various versions of NVIDIA drivers along with modified INF files to enable those drivers to work on older hardware. I got things working with driver version 97.44 and this INF file, following these installation instructions. My INF file differed from that provided by the site in two ways:
- I added the appropriate resolutions for the 24" monitor and for my laptop screen (1400x1050), as in this post.
- I added support for Tablet PC features like rotating the laptop screen, as in this post.
Anyway, things seem to be working nicely now. Hopefully this post will help others in a similar situation.