334615 XML productfeed into Magento

Hello, I have the following: in 10 days, my site is ready. But.....I do have a XML productfeed, containing produkts, SKU, description, several colors an several sizes. Are clothing, underwear and shoes. The xml-feed has to be imported into Magento. That means that also attributes have to be created in the proper way. Who is able to do that? Also needed: Someone to edit a CMS-block to place a plug and play webcamchat. It is plug and play, but i don't know how to do that. Offers pls asap.