does anyone know anti copy protection for software?

[mrjacob]

Hello people,

I have created a game for windows7 platform and want to put it on the internet and on cd for a small fee. I was wondering if anyone knows a good copy protection mechanism which i can use.
Ive found already a few anti copy protection mechanisms. does anyone has experience with this systems or knows better ones?
- lockPE doesnt seem to work for me because it causes errors when I try the program, but it seems to be pretty populair.
- the tool from logicprotect.com is way too expensive, i need something familair, but cheaper.
- exesecure.com offers an exesecure tool which seems to fit my needs but i cannot find anything about it on the web, has anyone used exesecure ?

Please let me know which mechanism you use if you ever did, I would like to have some tips.