Gallery 1.4.4 Login problem

Hi,

My login keep on changing and I have read some posts about changing the global registration in technical tab. But I can't find this tab (maybe it is my eyes' problem). There is nothing, I have been back and forward.... so many times

However, I manage to come in from view_album.php (this is danger though). Is it security flaw or there is something I don't know yet about this?

Note: This is my first time using Gallery.

Thanks, guys
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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
Apache version: 1.3.33
PHP version (don't just say PHP 4, please): 4.3.10
Graphics Toolkit: Image Magick
Operating system: unix
Web browser/version (if applicable): IE6