PMDG 744 Installation problem

Good day Simmers and developers.After drooling for months over the PMDG 744, I finally got it, an Aerosoft Boxed version.However I validate the reg key and then install her and all seems to be well, I reboot and enter FS9 And voila!! No 747 and no PMDG menu!!I have done this numerous times after uninstalling, defragment, reboot and whatnot for several hours and I'm about to loose my mind over this.I have quite a few add-on's 6 or 7 Aerosoft airports packages, Flight1 767 and ATR72, FE, Justflight WA2 and A340Pro and have never had a problem with innstallation until now or never had any problem at all!! until now.I'm quite sleepless as I write this after all the work on the problem but I wanted to know if anyone can give me an idea.And putting more hours on file management is not an option as I want to fly and not mess with explorer much more.I think I have an defective CD on my hands, has anyone had that???Will go to sleep now and ask better and more organised questions later.Thanks in advance. Golli.