I went down to the computer market here in Taipei and they only had the Windows in Chinese available but the Windows 7 Ultimate allowed language options during first install and 32 bit or 64 bit preference during install. I have the new 15" Macbook Pro with 4GB or RAM and a 2.53 Processor with a Vertex SSD. I'm debating whether to go with the Windows XP Professional or Windows 7 Ultimate using Parallels. Which will run better and faster on my Macbook Pro with less issues and problems?