There is a netbeans configuration option to change, in the menu:
Tools -> Options -> Miscellaneous -> FRC Configuration
Change your team number.
This step is missing from [1]. Their section on Netbeans is a little sparse and references an older version (6.7). No one took credit as author on that document to suggest this change.
[1]
http://www.usfirst.org/sites/default...20System_2.pdf