My java changes not reflecting on server due to dependency

Hi,

I have a project TurboLister that depends on another project Biz. I
can see a biz.jar in the libraries of TurboLister.

I am mainly working on turboLister, but I have some changes to be made
in Biz too. I have build automatically enabled in my eclipse, and my
eclipse is linked to my apache-tomcat. I can see the changes I make in
my TurboLister project, but not those i made in the biz project.

I have tried manually deleting and replacing all the biz.jars in my C:
drive with the new one. Only when I replaced the one in my workspace :

C:\workspaces\tr2_4\.metadata\.plugins\org.eclipse .wst.server.core
\tmp0\webapps\TurboLister\WEB-INF\lib

did the problem get resolved. How do I make my tomcat take my code as
I type it out, rather than replace my biz.jar in the workspace each
time ???

Help !
Zeba