Problem for re-install of the 737 on another pc ?

Hello,I buy another pc and i install FS2004 (and FSX) on itI would like to reinstall the pmdg 737 for FS2004So i install the pmdg 737-600/700 but i have problem to install the 737-800/900 because my pc says that the pmdg 737-600/700 isn't installed.In the 1rst install, the path is only focusing on the drive (c: or d:) and not focusing on the FS2004 path.So i read on your FAQ that a little utility solves this problem.But i run this utility, find my true flightpath for FS2004 (d:Program FilesMicrosoft GamesFlight Simulator 9), but the 737-800/900 don't want to install it again because the pc think that the 737-600/700 is not install.I have 2 hard drives:- 1 WD Velociraptor 10000T 300Go for Windows Vista Home Premium