Hello,
Nope it's easy to upgrade RAM. Just need to remove the hatch on the underside of your laptop and either upgrade existing RAM to greater capacity, or add another into a spare SODIMM slot.
You're manual instructs you how to do this. You can download a PDF reference guide for your Compaq Presario Notebook 2100 here:
http://h10025.www1.hp.com/ewfrf/wc/m...385190&dlc=en&
Also, about copyright protection, it's illegal to circumvent copyright protection put in place on CDs, and to break the EULA for a piece of software.