Dock station to turn Droid into a Netbook? Tethering Options?

[mojowork_n]

Looking around for a new phone. I know that I sometimes (often)
think and talk best through my fingers (I type real fast), so I've
been hunting for some sort of docking station with a Display + Keyboard
that I could plug into.

Ideally, phone in one pocket, dock in the other = instant netbook,
with the phone's processor providing the computing power.

Nothing too high tech, just good enough for e-mail, latest news, a bit
of note-taking and blogging.

Maybe one of the new phones, with a 4 inch screen, would be OK
with just a small, folding/portable keyboard?

The bad news was my first choice for a carrier, CREDO, doesn't
allow or offer any tethering at all. Salesperson suggested a
Blackberry w/USB, but the screens are pretty small on those.
(To make room for all the keys at the bottom.)

When I do searches for "Cellphone Netbook" + "Dock Station"
I only find dedicated devices, for one specific model phone.

Did I mention a mouse would be nice, too?

Maybe I should just get a netbook, and plug a phone into it
from time to time?