First if you are going to get into breaking games protection specially this ones such as: "Hackshield |Pro, Game Guard, etc, etc." You may want to check around the background of it...
Most of the game protections like the ones mentioned above, are based on Rootkit architecture, and that my friend is not a smooth cake to swallow.
As you may have seen my post in this section about GameGuard, Hackshield I have been reading that it's the same thing practicaly.
Here I've got some information for you that might give you an overhead when speaking about Hackshield protection
Hope I helped in someting and hope that someday you get to be a great hacker yourself and get a bypass for this teddious Game Protections madness XD
*Special Note* I have a Logitech G9 Gaming Mouse - with functionality to play with profiles and macros, If you would like to give it a shot I would defineatly recommend it to you, or any other gaming mouse actually there are pretty good ones out there, but they are very expensive, mine cost around $50~60, I tried a game it was like your example, I tried everysingle Macro'ing program and AutoIt, nor all of the others made it to make a macro work, finally I bought this gaming mouse and got it working! I was sooo happy lol Well this is just an alternative that might skip you ENDLESS hours of reversing the game hack protection