Fixing Blog Html (web design)

Please visit my blog at: [login to view URL] The blog has some problems displaying on certain browsers/ display configurations. It looks great on my screen but on others everything is over to the left and on a few screens, the sidebar is above the content (these should be side by side obviously). I need someone to clean up the blog so everything displays correctly on every computer and browser. Please only bid on this project if you have diagnosed the problem and are sure you can fix it. In your PM, let me know the work involved to explain your bid amount. Thanks