Hi! I do not mean a portable computer (notebook) but its where you can write all your notes and its portable!!!. I know this must be very popular already but for the sake of those "un-updated" Google is as usual giving this FREE very useful tool you can bring anywhere in the world. Its the Google Notebook: http://www.google.com/notebook. I am so impressed about this so tiny piece of thing but of HUGE use to me... I know you will like it too.
see here the snapshot
u can have it anytime anywhere...