Thank you Calvin.

I did that, and it's OK.

I, also, deny rights on "sp_get_dtspackage " and "sp_drop_dtspackage".

That way users cannot change or drop DTS package.

Thank you for the answer,

but how then you can forbid developers to create DTS package on the production server?

Thanks to all of you guys.

I read all the links, and now I will start that flag.

Then we will see.