world of ai installer problem

Hi there,
I have an problem with the WOAI installer when I choose a package
to install, the target box below is greyed out showing microsoft flight simulator FS2004, just wondering how do I get this so it is not greyed out and active so i can install a package to the FS2004 directory ? Any help would be appreciated,
Regards
I have an problem with the WOAI installer when I choose a package
to install, the target box below is greyed out showing microsoft flight simulator FS2004, just wondering how do I get this so it is not greyed out and active so i can install a package to the FS2004 directory ? Any help would be appreciated,
Regards