You can try the netbook version first to see if it's better for you
regarding the screen and if not suitable then go for the full version
and adjust the screen resolution to something less than the 'native'
one. You'll get a slightly less sharp image but it will have larger
fonts etc...

As far as I can tell there's only one netbook version and that will
automatically detect 32bit / 64bit on installation - too much to fit
onto a CD for a standard install so that's why there are two versions
of those :-)

The balance between screen resolution / font size / amount of
scrolling needed is a personal thing and what works for one doesn't
work for another. It's question of playing around with settings until
you find what suits you.