Problem in logging in as admin

My first recommendation would be to delete or rename your .htaccess file. That file is what contains the guts of WordPress’ redirection engine. And that’s also the only thing that could be redirecting from the login.

WordPress redirects virtual URLs to http://blog.url/index.php so that the blog can serve up content. But the admin dashboard and login pages are real pages within the site … not virtual URLs. If you can’t manually get to http://blog.url/wp-admin/index.php or http://blog.url/wp-login.php then that means something on the server side of things is preventing you from accessing WordPress … .htaccess is the first place to look … your actual server configuration would be the second.