I hope someone can help me. I purchased Sony Vaio multi media PC with Premiere standard factory installed. Last year I purchased upgrade premiere pro CS3 and installed it I had shared component error that was resolved with adobe tech support. the program worked flowlessly until recently my hard drive crashed and had to be replaced. Since then when I try to install Premiere Pro upgrade it has locked the program and is asking for serial number factory installed premier standard. The very first time I installed upgrade program originally it never did that . What can I do?