How to add a harddrive to Windows XP

hd300--lj-pers.jpgToday my new Samsung Spinpoint 300Gb harddisk finally arrived. The Samsung Spinpoint is one of the quietest harddrives on the market while being superfast and without using a lot of energy. I will use it as a backup for my files on the existing 200Gb Maxtor hd and I will use the remaining space for non-important files like swap- and temporary files. Therefore the hd has to be installed. But howto?