Password Mess

Hi,
I recently lost the password to my admin account and the email that it was listed under to send it to is no longer workng and accessible. I read the page from the codex on how to change the password. I tried myphpadmin, currently that has errors I couldn’t use that. So I tried to change the functions.php that came up but didnt work. Then I tried the emergency script. It said something about an error with my eshop which I do have active.

I’ve written the host for help with myphpadmin, I’m a complete noob with Cpanal and most of WordPress. But now when I try to login to my wp-admin page I get this error

Warning: session_start() [function.session-start]: Cannot send session cache limiter – headers already sent (output started at /home/thundeyd/public_html/wp-content/themes/aesthete/functions.php:1) in /home/thundeyd/public_html/wp-content/plugins/eshop/eshop.php on line 46

Warning: Cannot modify header information – headers already sent by (output started at /home/thundeyd/public_html/wp-content/themes/aesthete/functions.php:1) in /home/thundeyd/public_html/wp-includes/pluggable.php on line 866

The site is still up and running, I’ve taken out the emergency.php thing and also replaced the normal functions.php file.

What do I need to do to fix this mess? I’m really worried now.

Thanks for anyones help!