I run Parallels 6 on OsX Lion (MBP i7 dual core/ 4 GB RAM). Originally I ran Windows XP/Office 2007 and was unable to open Excel or Powerpoint files embedded in Word Documents (Office Mac doesn't open embedded PPT files). After multiple installs of Office with no resolution, I created an entirely new VM using Windows 7/Office 2010. I have the same problems with the new installation. Get the same problem -- the embedded object appears as "unknown object" although the icon for Excel or PPT is there and Windows says that the application cannot be located. Embedded word files within words or PDF open correctly. The relevant filetypes seem to be registered correctly. Is this a known issue with Parallels desktop or the desktop tools? Odd to get the exact same problem with two totally different VM's. Probably should have gone the bootcamp route, but there are many reasons why I don't want to do that. Any advice? Would upgrading to Parallels 7 help?