Moving from taboes to css

I wouldn't even try. It requires a rewrite from the ground up with proper modern methods. You need to learn a whole new approach to writing code. Moving "from tables to CSS" requires a whole new way of thinking.

All I would do with that site is run it through "tidy" to get the html valid. There are dozens and dozens of html syntax errors and it's all done with old, now deprecated, coding methods. Forget about it and leave it as it is unless you are prepared to start it over right from the ground up with a whole new design approach.

We do not do paid work here. There are other boards where you can get in touch with coders. Expect to pay a lot, because it's far harder to reconstruct a page like that than it is just to start all over. Pay someone to do it over unless you are prepared to spend some months learning how to code right, and then more months recreating the site.

I think it would be better just to leave it alone after correcting the html syntax errors, which are very bad ones, but a computer can fix that for you with little fuss.

Go learn how to do html/CSS the right way at a site like "HTML Dog" and move on to other projects. At least that's my advice.

Ed

Don't worry too much about your google rankings you are not likely to hurt them by improving markup the opposite should in fact be true.

As for the work you might be best advised to seek out a pro on one of the job sites who will undertake the work, especially if you're concerned that things are done well and that your google status is preserved.