Below is a posting that I was working on for TabletPC Buzz, but it may answer some of your questions on the TC1100, so I'll post it here.

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So, here are some of my thoughts on the TC1100 32Mb Geforce Go graphics display with an external display (HP L1925 19" flat panel).

(1) If you are running the external display only, and you have set it for more than 60Hz refresh (say 70Hz or 75Hz), you will not be able to rotate the external display. This feature is only supported at 60Hz refresh.

(2) DVD video in Media Player 10 plays fine on the external display in clone mode, or with the internal display off, but will not play on the external display when the desktop is extended. WinDVD has no such issue and will play video on either display, regardless of the starting display. However WinDVD will not play video properly when the window is stretched across both displays (the 128MB 9500 Pro on my desktop system is able to do this fine).

(3) 3D applications such as Maya PLE 6 work fine in wire and shaded mode on either display, and even work when placed halfway between both displays. However, you cannot maximize or stretch the application window beyond the starting resolution of the primary display (1024x768 when starting from the tablet display, 1280x1024 when starting from the L1925). This is probably a GL/D3D issue.

(4) Adobe PhotoShop and Flash ran fine when stretched across both displays. I also found that After Effects worked fine when stretched across both displays. This was most effective with the monitors set in a vertical arrangement (laptop display just below external CRT). Using this arrangement I was able to maximize the timeline space while still keeping a very large video preview window on the external display.

(5) I was able to get early D3D games such as Unreal Tournament to run in portrait mode at 600x800 resolution. No problems.

(6) The 3rd party external display pivot software (comes with L1925) does nothing once installed. Its probably being overridden by the internal tablet functionality.

(7) DO NOT INSTALL THE INF FILES FROM THE L1925 CDROM! Whenever I installed these files I ran into a bluescreen reboot loop and had to roll back my drivers. I'm currently working this as an open issue with HP tech support...

(8) Picture quality from external VGA port is GREAT. You will have to autotune your external display (push button on bezel) for optimal quality. Be sure to run the special test pattern before you press autotune. This is a small Windows application that comes on the LP1925 install CD, and is probably available for other displays as well. It puts up a full screen test image that gives the autotune function something to chew on.

Overall, I'm VERY happy with the Geforce420 Go in the TC1100. My next step will be to get some color calibration equipment and see if I can get them to identical settings.