Laptop Specs for Editing

just wanted to ask, what specs of laptop is best for video editing?

1. hdd - would it be better if i buy external hdd w/ 7200rpm?
2. video card - would it affect the quality of videos if the vc is
shared?
3. RAM - would it matter if it is pc2100 or pc2700 or even higher
4. processor - Pentium M or athlon mobile or G4? and minimum speed?

hope you can advise me something, before i buy a laptop... thank you

Hi,

I would say minimal specs for editing laptop
HDD min 200GB
Ram pc3200 1Ghz
P4 3.6Ghz

Depends on what software your planning on using, if you look at avid for example they recommend laptops for you to use