Comments Posting/Logging in

Okay I did this:
Downloaded new version of wp, uploaded all the files to their respective folders. everything that i downloaded was uploaded. nothing from the old version. Now I am having trouble. I can not log in, I get this error:
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-login.php on line 123
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-login.php on line 124
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-login.php on line 126
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-login.php on line 127
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-login.php on line 128
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-login.php on line 129
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-login.php on line 149
and I try to post a comment, it works after I am done, but meanwhile, after I hit “post” I get this error;
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-comments-post.php on line 89
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-comments-post.php on line 90
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-comments-post.php on line 91
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-comments-post.php on line 93
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-comments-post.php on line 94
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-comments-post.php on line 95
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-comments-post.php on line 96
Warning: Cannot modify header information – headers already sent by (output started at /home/alpha/public_html/wp-config.php:36) in /home/alpha/public_html/wp-comments-post.php on line 101