Innerspace gives the ability to Lock Foreground on all the instances under its control. So that means you can send keystrokes to all of your instances or only some of them when you push certain keys.

Since you already have WinEQ, I believe you can use Innerspace under the same subscription. Please take a look at the EQ2 and Innerspace thread I started. Even though it is specific to EQ2, most of it applies to any game. ISBoxer is the best thing since sliced jello.