I do not know of any source of Project files. Remember, they will ONLY have links to the Assets, and there are NO Assets inside them. If all that you have is the PREL, then there is really not much that can be Opened, as ALL media will be Off-Line.
Here is an ARTICLE that will give you some background on the PREL files.
Thank you Steve!
So much effort, knowledge and energy! You seem to me as you are from another planet!
By your replies I understand that PE7 and Sony Vegas Pro 9 work differently!
Because I have many "veg" files, I just only change the letters or pictures!
Indeed I was looking for "veg" equivalent of Premiere Elements!