Change Letter is a handy little utility that permits you to change drive letters via the right-click context menu.
Once you have deployed Letter Changer it will save you a trip to your machine's Disk Managment. All you need to do is choose the drive, open up the context menu, and select Change Letter. If you are allowed to change the drive name a thru z will be available in the drop-down. Additionally, you can hide or totally remove a drive as well.
Change Letter gives you the freedom to letter your drives the way you want; S for DVD RW Drive? No problem. It is also available in portable so you can load it on a USB flash drive and have it with you no matter where you happen to be. If you have VHD Attach installed, you will not even get UAC prompt.