Haha...  that reminds me...  Many programs have anti-replication software.  Really, what is most important is having the exe because everything else can be downloaded from the forge tools.  I know someone who managed to find an exe decompiler and has figured out how to hack the stuff...  He doesn't sell it to people, he actually uses it to censor out parts of it and using a similar principle has taken R rated movies and knocked them down to what I would call PG so his eight year old sister can watch it...  I don't know why she wants to see it, but his parents let her watch them so long as he censors out all the bad parts...  Unfortunately, some movies are nothing but constant beeps...