Hello Vanessa, The answers for your questions: 1. For Windows 7 installation on a Bootcamp, I would recommend you to follow the link : http://www.apple.com/support/bootcamp/ If you wanted to install Windows 7 with a USB Device in Parallels Desktop, we suggest you try to install Windows from an ISO file, For more information, please refer: http://kb.parallels.com/en/4729 2. To play skyrim with low graphic settings, I would recommend you to first download and install a trial version of Parallels Desktop 8 and then use your bootcamp Windows 7 or newly installed Windows 7 virtual machine on Parallels. You can download Parallels Desktop 8 trial version from the following link: http://trial.parallels.com/index.php?lang=en&terr=us To check minimum system requirements for Skyrim, Please follow the link provided below: http://www.pcgamer.com/2011/10/26/t...nts-released-render-giant-spiders-on-2gb-ram/ 3. The performance of a game affecting your Mac, completely depends on the system requirement. If your hardware does not meet the game requirement, then it would definitely affect your Mac in terms of performance. However, If you don't want your Mac to slow down or have any performance issue and also use low graphic settings at the same time, We recommend you to run the game with Minimum Specs mentioned in the above link. Please let us know if you have any further queries regarding the same. Thanks, -- Javed Khan Technical Support Engineer || Parallels Knowledgebase: http://kb.parallels.com Follow us on Twitter: @ParallelsCares
