This is an old thread but, If any one has the FSM that requires you to run it in VirtualBox I can help to make it work on Windows 10.
Step one - open the VirtualBox and browse to C: drive. You can then drag and drop the folder that contains the manual from virutal box to your local computer.
Step two - on the local computer browse into the folder and find the default.htm file - right click on that and open with internet explorer. ( Must use internet explorer )
Step three - on the welcome screen Allow the blocked content message that pops up. then press the F12 key. The developer window will open , go to the emulation tab and set the Document mode to Explorer 7 and the User Agent String to Explorer 6
You have to leave the developer window open but now you can use the service manual
For the Wiring manual I have been able to fix the JavaScript errors that pop up for the error Unspecified SIE-Type "" passed to frameset PM me and for a small fee I can get that working for you also. Requires you to send me a few of the files from your FSM that I will change and then send back to you,.