addon liveries not showing up

hi everybody..
i have installed thomas ruth's airbus series but the problem is when that only the basic model of tom ruths aircrafts are showing in my fsx aircraft selection menu. i have added other liveries too, but they dont show up.. only the basic aircrsft shows up. previously i had windows xp and everything was working fine, but now when i installed windows7 this problem has occured. anybody can help me out please.. is it got anuthing to do with my win 7??
thanks..