how to show blocks on home page in group fashion

Hello ALL,

I am going to set up a news web site with drupal 6.14.

It present sports channel, music channel, economy channel, medicine channel.

In each channel, news stories are provided. Each channel is shown as a block, with a block title indicating what the channel is about. Under the block title, 9 newest story titles (hyperlinks) are listed for users to click. The block title is also a hyperlink. When users click the block title, a NEW window will be brought up to show more news story titles.

I would like the four channels occupy the content section of the Acquia Marina theme.

the layout of my home page looks like

 | left sidebar |   ----------------------------------------          |                   | 
|  left sidebar   |            Sport               |     Economy                |                 | 
|  left sidebar  |           ----------------------------------------    | right sidebar | 
| left sidebar   |           Sport new1 link |   Eco new1 link           |  right sidebar  | 
|  left sidebar  |                                   |                                   |  right sidebar  | 
|   left sidebar   |           Sport new2 link |   Eco new2 link           | right sidebar  | 
|  left sidebar   |                                   |                                   | 
|  left sidebar    |                   ....            |     ...                           | right sidebar  | 
|  left sidebar   |                                   |                                   |  right sidebar    | 
|  left sidebar   |          Sport new9 link  |  Eco new9 link           |                   | 
| left sidebar   |          ----------------------------------------     |                   | 
|  left sidebar     |               Music            |      Medicin                  |                   | 
| left sidebar   |          ----------------------------------------      |                   | 
| left sidebar    |           Music new1 link |   Med new1 link           |                   | 
| left sidebar    |                                   |                                   |                   | 
| left sidebar    |               ....                |      ...                          |                   | 
| left sidebar     |                                   |                                   |                 | 
|  left sidebar   |           Music new9 link |  Med new9 link            |                      
|  left sidebar   |           ----------------------------------------      |                | 

I could not figure out how to implement the above home page with drupal's blocks and themes. This problem has stucked me for serveral days. Please help me.