Yes, but remember, you shouldn't just be aiming to get an XHTML compliant page. Your ultimate goal should be to have a clean, semantic, cross-browser compatible page, and I'm sure the code produced by ImageReady could be improved on a lot in this respect
If you're going to go to the trouble of producing an XHTML compliant page, you might as well make sure it's as clean and efficient as possible. What's the point if you're just going to get to make sure it validates and then leave it at that?