.
Maybe this table displays my intention more clearly:
Code:
              | 64bit Apps/Libs     | 32bit Apps/Libs |
--------------+---------------------+-----------------+
64bit CPU +   |      works          |     works       |
64bit Kernel  |                     |                 |
--------------+---------------------+-----------------+
32bit CPU +   |      doesn't        |     works       |
32bit Kernel  |      work           |                 |
--------------+---------------------+-----------------+
64bit CPU +   |      doesn't        |     works       |
32bit Kernel  |      work           |                 |
--------------+---------------------+-----------------+
32bit CPU +   |               not starting            |
64bit Kernel  |                                       |
--------------+---------------------+-----------------+