I am running Parallels Build 5608 on an iMac with a Windows XP guest operating system. Most things work fine, but I cannot install Parallels Tools. I am logged into XP as an administrator, and when I click on "Install Parallels Tools", the menu item changes to "Cancel Parallels Tools installation", but nothing happens... ever. The menu items will go back and forth, but the tools are not installed. I will greatly appreciate any help with this. Thank you.