Horizontal display of albums on main page

how can i get the main gallery page to display the albums horizontally (scrrenshot 1) rather than vertically (screenshot 2)?

SCREENSHOT 1 :

[img]http://img284.echo.cx/img284/1182/screenshot5lh.th.jpg[/img]
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SCREENSHOT 2:

[img]http://img111.echo.cx/img111/2152/screen23kv.th.jpg[/img]

any help will be appreciated.

thanks

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The following information is required to get an answer:
Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful):
Gallery version: 1.4.4-pl4
Apache version:
PHP version : PHP v4.3.11
Graphics Toolkit:
Operating system:
Web browser/version (if applicable):