I got laptop that i use for after effects, photo-shop what best worked for me was
full keyboard (with numpad)
dual bay hard drive (must)
AMD Phenom™II Quad
ati dedicated video card (any ati or nvidia will work fine as long as its not embedded)
64gb SSD drive + 1TB 7200rpm drive
what i really wanted was dual bay laptop so i can Raid 0 2 '1TB drives, but it was hard to find so end up with SSD+ regular drive.
Video card card still plays very little role in after effects, photo-shop, GPU accelerated didn't work for me good at all, so that was least important part, as long as it got 512MB and its actual separate card in laptop any will work fine.