A friend has a notebook computer that needs a new modem and screen (the screen is cracked) where is the best place to buy replacement parts? Hewlett packard wants 600 bucks for a modem and new screen thats crazy the notebook computer didn't even cost that much. I figured you can get the parts on line somewhere cheaper?

As for replacement parts I would go to http://www.ebay.com . It is usually very hard to find replacements like laptop screens.

laptop screens are expensive
good luck finding a cheap one
better just replace the laptop if you say it is not worth $600 itself

just go to ubid and get a new one