[support] Menus

Hi, I have been dabbling in Drupal for a short while now... however, I have a problem... I wanted to have customisable menus... i.e. in my primary links at the top of the page, I will have a standard header.... that will apply to all sections of the website... Also on one of the blocks I will have a section based header... i.e. I have the main header with the primary links which never changes regardless of the section... on the menubar on the left or right of the page I will have a submenu which will change whenever I go to a different section...... Can this be achieved using drupal...? If so how....? -- Warmest Regards, Pherowze