Wow !! You guys are brilliant , i never expected such quick responses , glad to know that people are out here to help. Really good forum , i am going to purchase PMDG in 3 days time , i shall give you the feedback.
After reading your response , i think i will go with installing the fsx first , run it and then install SP1 run it and then install SP2. I wont be going with the acceleration because flight sim aircraft's are no use to me , i just dont like the idea of GPS navigation.
Good to know that there is a virtual network for ATC , I shall seek help on that once i set up my whole simulator.
Thanks once again for the response. One last thing , is it possible to add you guys into my list ? If so , how to?