This type of question is really a marketplace question and you would be better of posting in the looking to hire section to find suitable developers. Otherwise this post will just be a magnet for people to offer their services which is not what the general discussion forums are for.
takes a finished site that works in all standards-based browsers and fixes it up for all versions of IE?
You would need to be specific in your versions request as I doubt anyone will want to code for less than IE6 (apart from a few die-hards).
Coding for IE is no real problem and if the site was built properly form the start there would be no extra work as nearly all the bugs are known and all work-a-rounds are pretty straight forward. Any developer worth their salt should be able to support IE6 and upwards without problem.
If on the other hand you have specific bugs that you want fixed then feel free to post in the CSS forums and our resident experts can point you in the right direction.
If you really are looking to hire someone then please post in the marketplace section as that is what it is there for.
Thread Closed but feel free to start a new topic if you want help with specific bugs.