Hi Tip32a,
First you need to understand the Linux filesystem a little bit, in Linux you don't have drives like "c:", "d:" and so on but you got a single "root" filesystem (the /). Within that filesystem you can mount other filesystems to "paths (or folders)".
The disk utility just creates a partition table on that disk, nothing else - to use it you need to create a partition, format it and then mount it somewhere.
Please ask here if you need help with the above steps.