This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
The bottom line is the driver needs to go to the TOMCAT lib.
If you are using MyEclipse;
Go to preferences (Window > Preferences), then Servers > Integrated Sandbox > MyEclipse Tomcat <version> > Paths
Under prepend to calsspath, add the jar.