vista doesn't autoconnect to wireless after startup

I can easily connect manualy to the internet ,but the system never connects after restart even though I put a "v" on automatic connection and on save setting as well .

I will be thankful if anybody can suggest a solution.
I did everything to save the setting and the auto connection nothing helped.

My System:
Dell Laptop Inspiron 6400, Vista Home Basic, Router: Linksys WRT54GL

Thank you

Shlomobe