Social Networking and Training Site

We are building two sites: one simple content management site for the client's home page, and one private social-networking and training site for the client's clients. Client is supplying mockups in PowerPoint, we'll finalize design with wireframes and then build out into Web 2.0 technologies. Essentially we are looking at two templates; one for the CMS and one for the social networking side. In addition, we'll need various sub-page level elements designed for the social site, as well as icons and minor graphical elements. Designer to work closely with developer throughout the beginning phases of the project. Our designer will be doing wireframes and designs for both sites, starting in InDesign and ending in HTML/CSS. Knowledge of version control systems (we use Git extensively) is a plus. We expect the design portion of the project to last about a month, designer must be available immediately to start.