How could you forget something up with it? It's literally plugging stuff into slots and using a screwdriver. There's no reason that you shouldn't be able to do that. The only thing I'd be concerned about with somebody new to it is trying to force things, using too much heat compound, and static. But all three are easily solved by not being dumb.
I've got an Alienware M11x, most people yell "hurr overpriced piece of stuff", but for a sub notebook, I think running Crysis on high is pretty good.
Alienware are obviously powerful, but it's still overpriced.
when it comes to very portable and powerful laptops, you can't just build one, now can you?
No, but why would you want a laptop for gaming in the first place? Get one good enough to run something simple that can keep you entertained if you have to, anything more is just unnecessary and can just as well be done with a home-built desktop.
when you have divorced parents and the need for something easy to move around, you'll see.
Look to the right, blind one.
http://www.ibuypower.com/Store/Special-B/w/83688