Hello. I have a file created using the Mac version of Illustrator CS5.5. When I opened the file under the Windows version of CS5.5 (running under Win XP Mode on a Windows 7 partition), I found that the background color is either disappeared or changed to white. Is this a compatibility problem? Any other problems in running other CS5.5 programs under Win XP Mode? I have Illustrator 10.1 and Photoshop 4. They don't seem to work well under Windows 7. So, I tried to run them under under Windows XP Mode. Unfortunately, there seem to have compatibility problems with XP Mode as well. In both cases, the colors do not seem to match and in Illustrator, the letters are misplaced. Thanks.