Magento design(repost)

I am looking to setup a magento based website to replace the clients existing site. I have an existing template that is xhtml/css and am happy for you to use the source code. I do need some small changes, I have png images of the exact design I wish to use. I'm not familiar with Magento although I've written several small cms myself and am reasonably experienced with CMSMS and WordPress. Obviously I'm happy working with xhtml/css and php to a degree, although I've no experience of the templating system magento uses. The project needs to be completed quickly so I don't have enough time to learn Magento fully. Hopefully you can help me with this. I have installed magento myself on a dummy domain on my hosting account. It works ok, admin panel etc all accessible although I'd appreciate a once-over from someone who has more experience of the system. I would require the following: * Installation and configuration of base Magento installation - as discussed, this is potentially already done. * Setup and configuration of selected payment gateway - to use PayPal Pro, I believe this is already a feature of Magento? * Design, build and installation of templates - xhtml/css template and design reference images provided. * SSL certification - I'd like to know more about this. I have no experience with secure online transactions. I have had one coder look at this work and say they could do it very quickly only to find out them had limited knowledge of html (eg, not knowing how to make a basic email link or css dropdown menu). I really do need this completing quickly. The work is mainly layout work and modifications to the default magento layout. More details available if required. Budget <$500, timeframe 1 week.