[support] Multiple sites with different database and different contents

Hi... I have installed drupal 6.8 and its working fine with no problems at all. However, now I am into a scenario where I want to host multiple sites with different databases, different content but the same codebase. I know i can do it by juts extracting a drupal tar file and re-installing stuff again..But this would be my worst case situation. I want to do it using the multiple site flexibility. I am a newbie when it comes to setting up virtual hosts. I am using openSUSE 11.1 thanks in advance! Radhika