Does anyone have experience of Movie Maker, Vista and integrated graphics
cards?

I am thinking of buying a laptop with 2mb of memory and an Intel Integrated
graphic media accelerator X3100. Or should I go for a nVidia GeForce Go 8400M
GS with 128mb dedicated memory?

My main use is downloading video from a video camera, editing in Movie Maker
and rendering with Nero. Any thoughts are welcome.

anytime it's better to get 8400 rather than integrated card.
remember, laptop graphic card are not meant to be changed.
its manufactured to live with the graphic card made...

although the performance might not be significant in the movie editing,
believe me, there is difference between integrated graphic card and external one, especially X3100 vs 8400...

btw the laptop you mentioned have 2GB memory, not 2MB...,
and if the specification of the laptop is the same,
definitely go for 8400 instead... :)
Good luck choosing...