Create or modify css/php to look better/work properly

We have an ecommerce site which we need someone to tweak in terms of CSS and php layout. You will also need to be profficient in php and CSS. All CSS needs to be incorporated into our core CSS file. We will supply FTP access and a link to view the designed HTML which we would like to emulate - we fully understand that it may well not be possible to replicate 100%. We need someone to work on this right away - we will be on MSN to discuss constantly whilst you work until completed as best as possible. $45 available budget - we're only posting this to allow us to work on other project at the same time.