Protecting without EXE wrapping

[Jetheat]

I just had a look at the alpha rom solution but that seems to only protect exe files.
It doesn't mention anything about protecting other items on the CD.

Although I'm expecting to sell 50, I'm actually hoping to sell a lot more - possibly over 100. I am getting the course of 18 CDs duplicated in sets of 10 though.

You mentioned DRM as the way to go. What do you mean by that and how is that implemented. Any idea on costs? I can only afford to shell out a maximum of £15 per set sold.

You also mentioned that USB Dongles can't protect too much. Do you mean that their memories are too small to protect all my content on all 18 CDs?

JH