Can not enter my Joomla Admin after installing CB Admin Menu Navigation v. 1.9 module

I can not open / log in to joomla Admin of my web site after installing the "CB Admin Menu Navigation v. 1.9 module" from Joomla polis . I tried many times , but failed . After put the user name and password in Admin login window and after click login , it does not open and go to a new page in which it display the message : "Oops! This page appears broken. DNS Error - Server cannot be found ".
My details are :
CMS : Joomla 1.5.20 with Community Builder
Data base : Mysql
Web address : www.bspi-alumni.com

How can I enter my admin panel and overcome this problem ? Pls help me.
Regards,
Obaidul

obaidul wrote: I can not open / log in to joomla Admin of my web site after installing the "CB Admin Menu Navigation v. 1.9 module" from Joomla polis . I tried many times , but failed . After put the user name and password in Admin login window and after click login , it does not open and go to a new page in which it display the message : "Oops! This page appears broken. DNS Error - Server cannot be found ".
My details are :
CMS : Joomla 1.5.20 with Community Builder
Data base : Mysql
Web address : www.bspi-alumni.com

How can I enter my admin panel and overcome this problem ? Pls help me.
Regards,
Obaidul

I cannot see this having anything to do with the module you installed.

Something else is wrong - ask your hoster.