I have a home page where the forum is hosted.. And i have an URL which redirects the user to the home page.. But the login does not work if the user visits the site through the URL fowarding.. But works fine when directly accessed from the home page.. Please help me...
So you can't log in when you're using www.izer.tk but you can when you're using the domaindlx URL?
As I said, get rid of the frames. That's causing your problem. The only way to not having to lose the frames and still keep your domain visible, is by integrating your forums into the site and moving to a host that will allow you to use your own domain.
try deleting all cookies, closing all browser windows and then login. You probably have a forum cookie set on your computer that's pointing to the wrong URL and therefore it won't let you log in.