Info on kernel choice

[de Selby]

Hi all,

I'm a relatively new linux user and so far I'm extremely impressed
with Ubuntu. I'm even considering completely abandoning WinXP for
Ubuntu on my home desktop too, so take that as an anecdote of success
if you wish.

Anyway, I have a general question on kernel upgrades: I installed
Ubuntu from a pre-release version downloaded a few weeks ago - I'm
thinking about upgrading my system now or in the near future
(according to the instructions at
http://wiki.ubuntulinux.org/WartyWarthog/UpgradeNotes ) but I'm at a
loss as to which kernel to chose (linux-386, linux-k7, linux-k7-smp,
linux-686 or linux-686-smp). Could someone provide a link to some
information on  these choices or perhaps a brief explanation of them?
I'm having difficulty sorting out all of the information on kernel's
that my searches are bringing up.
FYI, I'm running Ubuntu on a Toshiba laptop with a Pentium Celeron
processor - I imagine any of the above choices would work, but how do
I decide which is best?.

Many thanks in advance,
de Selby