would you please tell us what kind of computer you have, and how much RAM is in it now. If this isn't built by a manufacturer, what motherboard does it have please.
If you know that your motherboard will take another 512MB of RAM, and that the module is compatible, try the link I've provided. In the article they discuss grounding youself so that there are no eletrostatic discharge problems, you can usually do this by grabbing hold of the metal side of the case before you handle any of the components. Leave the module in its plastic bag until your ready to use it, the bag protects the module from ESD. Follow the other instructions, make sure that the module is secure in its socket, and you shouldn't need to do anything else.http://www.ehow.com/how_895_install-ram.html