Netbook help!

[Tsunami]

I need some help purchasing a netbook! Its been a while since I kept up with technology....

http://www.dell.com/content/topics/s...dhs&redirect=1

http://www.overstock.com/Electronics...3/product.html

What do you think of these? I am looking at them for the price. What is the dfference between windows starter 7 (dell) and windows xp (samsung). If I don't have an external cd/dvd drive how would I load programs? I do have a external hardrive and a computer with cd/dvd drive so can I just sneaker net it over?

Can I run MS office on them? And is there an imitation MS office that I can download for free? Or feel free to shoot me a pm if anyone wants to share what they have with me

And are netbooks superslow??

Thanks!