want asus but want to customize

[farley89hd]

I am looking a a ASUS lap, but most the places that sell them don't customize, they only sell set ones. anyone know where I can customize a ASUS

[farley89hd]

small customize;
not crazy, not changing MBm, video or stuff.

I would like 4 gig, not hard to find
250-350 HD, again not hard to find.

I would like W7 Pro
LED Screen,
would love to get backlit keyboard

looking to spent max around 1200

it's the W7 Pro and LED screen I am having trouble finding together

thanks