Basic question Javac ... (it is long !!!)

[Viraj Purang]

Hi,
   I am new to the ANT scene, so a silly question.
I have multiple modules in CVS each having its own src directory


CVS Structure for module ...
---------------------------------------

    <module-name>
        properties
            com
                <company-name>
                    <module-name>
                        <module specific directory/property files as needed>
                    <dir1>
                        <sub-dir1>
        images
            <dir1>
        public_html
            <module-name>
                <dir1>
                <dir2>
                <dir3>
        src
            javabeans
                com
                    <company-name>
                        <module-name>
                            <dir1>
                            <dir2>
                            <dir3>
                            <dir4>
            servlets
                com
                    <company-name>
                        <module-name>
                            <dir1>
                            <dir2>

SO do I need to have seperate hierarchy of build.xml files at each 
directory level or only one at the topmost level to build.
In case I need a hierarchy ...how do I code that ? PLease POint me some 
examples if you can !!!

Regards,
Viraj Purang