Setting up the built-in webcam on the HP DV2000 laptop isn't that hard, here's a quick run thru...

Dependencies

First install all the dependencies your going to need to build the drivers from source,

sudo aptitude install linux-headers-`uname -r`
sudo aptitude install build-essential subversion

This will install the GCC compiler, linux headers, etc.

Build Driver

Now in Terminal,

svn checkout svn://svn.berlios.de/linux-uvc/linux-uvc/trunk
cd trunk
sudo make
sudo make install

First you pull the Linux-UVC source from Subversion, move to that directory, compile the source the install the binaries.

Check for Webcam

Now check to see if you have any USB video devices (your webcam usually)

sudo lsusb -v

Scroll thru all the entries, one should be the webcam.

Use it

Next up we'll need some tools to use it,

sudo aptitude install ekiga cheese

Cheese is a simple webcam recorder, much like Apple's, allowing you to take a photo from your webcam and apply some neat effects to it real-time, the other is a more convential tool to use it.

Tested & Working on Ubuntu 8.04