If I open Mac Powerpoint 2008 with two or more ppt files open (for example file1.ppt, file2.ppt and file3.ppt), I have problems swapping between an xp widow and powerpoint. For example if I am in file1.ppt and then swap to a bible program window in xp and on the powerpoint icon in the dock, it doesn't return to the PPT window with file1.ppt. It may return to the file2.ppt or file3.ppt window. Sometimes I can go to the ppt file menu and selcect file1.ppt under the window to get back where I started, but usually it refuses to go to that window unless I swap out of coherence mode. Sometimes, I have found that the file1.ppt and file2.ppt windows are in different MAC SPACES, so this may be the problem. I 'm just not sure why they show up in different spaces. I am using parallels 6.0 with xp professional. I had this same problem with parallels 5.0.