Virtual PC 2007 Console Disappear

you have been experience that your virtual PC console is disappear and you do not know how to bring it back. after browsing here and there I found the way to bring it back. just follow my tips :

1. Check file option.xml in path C:\Documents and Settings\name_of_your_computer\Application Data\Microsoft\Virtual PC\option.xml

2.Copy the file first. so if you get some error you can bring it back
3. Paste file with other name.
4. Then edit file option.xml
5. Edit the number like picture bellow into 0.
6. Then Save file and try to open Virtual PC 2007 again. good luck