2 jtables: table1 and table2....

table1:

|----------|----------|----------|----------|
| col1     | col2     |  col3     | col4     |
|----------|----------|----------|----------|
|            |             |            |             |
                data.....




table2:

|-------------|--------------|
|   cola       |     colb      |
|-------------|--------------|
|                |                 |
        data.........


i would like to join these two tables so that the end result would be:


|----------|------------|------------|-------------|
|  col1    |    col2     |     col3    |   col4      |
|----------|------------|------------|-------------|
|            |               |                |                |
                     data..........
|             |              |                |                |
|----------|------------|-------------|------------|
|           cola           |           colb               |
|-----------------------|--------------------------|
|                             |                                |
                      data..............
|                              |                              |





anyone knows how to do this, or can point me to a tutorial or something?

victor