Im assuming that u hav assigned all of the available space on ur drive to the partitions that u hav already created? Well if thats the case, then follow aaron's advice. If u still got unallocated space, then u should b able to use the winxp computer management tool (in your administration tools in control panel) to define and format another partition. This eliminates the need to download any software to resize partitions etc...BUT if u need to resize partitions, then u should follow aaron's advice