UNABLE TO DEPLOY EXAMPLE APPLICATION

I just downloaded netbeans 5.0 and was able to follow the tutorial to develop the sample application, the problem is with the deployment

the following is the error message i get when i try deployment

Cannot deploy. Module already exists. Set force=true for redeployment.; requested operation cannot be completed

C:\Documents and Settings\Rocky\PRACTICE\CustomerBook\nbproject\build-impl.xml:219: Deployment error:

The module has not been deployed.

See the server log for details.

BUILD FAILED (total time: 1 minute 44 seconds)

i need help to get around this problem

[614 byte] By [kudzo] at [2007-11-26 7:34:34]