WordPress Theme Modifications (PHP, MySql, Word Press, CMS, Developer, HTML, CSS)

Hello, I need some modifications made to an existing WordPress theme. You can see the site and theme here: <[login to view URL]> - Needs to pass w3 validator (currently shows 9 errors) - Need to make sure the site is fully visible and compatibly in IE 7, 8, 9 and FireFox, Safari, Chrome - On the homepage we want to add some spacing between the body content posts and the sidebar items. - Need to make sure image alignment and wrapping is setup correctly in the CSS, this page ([login to view URL]) for instance doesn't seem to wrap text around the image correctly - Need some type of gallery setup on the "Photos" page. Should list 8 albums initially with the user option to scroll through multiple pages of albums. - After clicking on an album the user will see a list of photos with captions. When the photo is clicked a lightbox window will show a larger version. - The sidebar widget header text, "About Keith Stubbs" for example, need to have a better look than just plain text. We want the same green banner used for blog post titles to be used on the sidebar items.