The tool is actually called a "multi pro" everyone calls it a Dremel tool cause the company name is Dremel and they are famous for this tool.. they also make other drills and saws though...
anyhow, you can get a kit at home depot or other hardware store...
they just redesigned them, and these actually look nicer than the older style like I own...
http://www.dremel.com/productdisplay...ay.asp?SKU=395
I live by this tool!! make sure you get one like this that has the variable speed, not just 1 or 2 speeds..