how to get the classpath to be set by XCode for added libs

Hi

I have not done any serious WO programming since 4.5, but I have been  
doing hosting of java based WO since. I am helping someone now and  
this person has an app that uses mysql.  He has the mysql connector  
jar and we are trying to get XCode to reference that in the  
UNIXClassPath.txt file as HOMEROOT/Library/Java/mysql_connector.jar

 From what this person said, he added it as a lib to XCode and  
rebuilt the app after moving the .jar to ~/Library/Java on his OS X  
dev machine.

What do we need to do so that XCode automatically makes the above  
HOMEROOT entry in the UNIXClassPath.txt file.   If I make it by hand  
the machine works fine so I know that is OK -- we just want it to  
happen every time the app is rebuilt.

Thanks
Chad