No 'Site Admin' section after Installation WordPress 3.01 No admin status

Dear wp mudev, I installed wordpress 3.01 and I have no Site Admin section. After the installation where the first time I registered a different usename than the suggested ‘admin’ (in the install section after creating a wp-config file), there was no Sits Admin. I deleted the installation from the server and cleared the database tables, reinstalled this time using the suggested ‘admin’ username, but there was still no Site Admin. Can you please help me?