Starforce 3 and Soldiers - Heroes of World War II

[Jameshuden]

I have read on here over the last few weeks about Soldiers - Heroes of World War II and the fact that no one can get a back up copy of their original CD to work because of Starforce 3. I downloaded the Demo and I bought the game when It came out. The question I have Is can you not use the Demo to learn how to get the full version to run without the CD?? The Demo does not ask for a CD or a CD Key and I know Demos never ask for this. Why can't you change the Demo exe and soliders.dll file to work with the full version?? I know both files were changed In the full version so why can't It be changed again?
I am new at this and I don't know how to do It but I just want to know If maybe It Is possible since so many people are trying to get a No CD for this game??