Has it always been there or did it just appear? If it has always been there, nothing to worry about since most computers have several partitions. (such as that) They can be used to put data to different locations, like media to other and all programs for other. If you want to get rid of it, you can get PartitionMagic 8.0 and merge them together, but if you dont have any understanding of computers - I wouldn't suggest it because you can mess your computer with that quite easily.