Or get yourself a netbook: quite cheap and often over 8 hours of battery life...
mine does just 3 hours, but I went on the cheap for 299 euro.( Packar B) 6 hours would have costed at least 50 euro more.
Don't forget that a netbook doesn't have a disk drive. So you must have installed everything already on it, or buy an external disk drive ( 39 euro ) , sometimes necesarry to install older drivers on CD or DVD.
A mouse is also better than the touchpad.
Watch out for bargains: some do offer them with XP or Vista. Go for W 7. Despite the small screen, the image is cristal clear. Difference with some other models.
Battery life is also a price matter.
Mine was sold with a 60 days MOffice trial. Instead of stepping in that trap, I installed Open Office on it for free.
Extra: I do also have the MS Works package for free. You don't find this installed standard on many PC's anymore.
Blue tooth as well.
In build web cam picture + film with sound. Great for holidays. You can put all your pictures of cell phones or camera's on it.
it is much stronger/stiffer than a laptop, because its smaller size.
And the weight is also < 2 kg.
It connects very easely with available WiFI.
You can use it for free internet telephone over WiFI.
you have to show it at airport security, costing you an extra 10 seconds.
I never regretted it.