Construction: Upgrading and Maintenance
Removing the bottom access panels reveals the 60GB Toshiba 4200RPM hard drive, 1 x 512MB DDR333 memory module, and Broadcom 802.11b/g WiFi card. HP only offers up to 1GB of pre-configured memory, but the 855GME chipset that the ZE2000 is based on can support 2GB of DDR333 memory. Seeing as this is a value notebook, few people will probably want to go to the trouble of maxing out their memory.
The keyboard can only be accessed by first removing the lower two screws beneath the battery pack that secures the top bezel. Once those screws are free, you just need to use a small flathead screwdriver to pry the bezel lose from lid joint or the keyboard notches. There should be no reason to access the keyboard unless you are trying to clean it, as both SODIMM slots are located on the bottom of the notebook. The optical drive is a modular format in the sense that HP can easily configure it with different selections, but you will not be able to swap devices in and out, as it is not designed like the modular format of HP's business notebook line.
We should note that this notebook's display has a certain "range." It can't be turned 180 degrees so it is completely level. For you, this shouldn't matter as turning it that far back only helps when you are performing maintenance. For those that tinker, the notebook's lid tilt to about 30 degrees from completely running parallel to the notebook chassis.