I'm looking to build a really small inexpensive email and web browsing box
for my brother, an autistic person who lives a very small room in my sisters
house.

The D510 looks like it might fit the bill. I like a lot of things about this
processor and a small netbox should be easy to cobble together to fit his
needs from it. I'm a little confused about the specs, however. The clock
speed is 1.66 Ghz, the bus type is 'DMI', but no system bus speed is listed.
Anyone know what DMI stands for?

Thanks,
Jon