Evan,
Thank you but i still have a problem i think. I can not mess with the account of my brother in law. He has that account for his work and when i go in PHPAdmin and go to wp_user there is only one user and that is the one of my brother in law, also his work email is there. But the account i made today is nowhere to be found.... Maybe i am a bit slow but i am not sure what to do exactly now.. do i need to change the account of him or is there another problem that came up when i uploaded my website via the plugin... Because my username and password are not there anymore after i uploaded the site... So if i reset the password on the only user that is there.. am i not changing the password of his profile?
and when i do have to change the password i will do it the way you described in the link you send.