Hi Al82,
The "zeroteam" version of zeroteam has some pretty big protection issues and it's one reason why I left it stay buggy like that. (check the game Notes:) The clones under it "New Zero Team" and "Zero Team 2000" are perfect though, and not much different from the parent, so I recommend using one of those. I think one of those clones is exactly the same as "zeroteam", but one has a different level order. I can't remember which, though!
best regards,
- dink