First of all, you need to finish the sign quest... this is the prerequisite of making the curse water...
If you haven't done this you won't be able to do it even with your macro.
Assuming you have finished it.
- Install first the macro plugins from
http://openkore.sourceforge.net/macro.
- Then create a file macros.txt in your control folder. This should contain your macro.
- Modify your config.txt if needed.
You may post your macro here to check the algorithms, or if you don't have I'll post one myself.