If your using Windows Vista / Windows 7 make sure you right click run as admin.
Where it says "process" make sure you put Engine.exe with a capitalized "E"
What injector are you using, if you are using PerX put it on auto-inject, if the injector you are using as a button that says Auto Inject, click it. If there isn't an auto-inject button load CA and when you see hackshield pop-up click inject. If its set to auto-inject just load CA normally, the hacks this patch normally turn on with the Insert button.
Overall if the injector says "Successfully Injected!" once your at the log-in screen press Insert and you should have your hacks ready.