Let's Make Robots!

v2

Wiring two seperate power supplies on a 28x1

Ok, I feel really really stupid asking another easy beginner question, but I checked the picaxe manuals and a bunch of posts including fritls's 28x1 for dummies tip/walkthrough and couldn't find a answer I could really understand. My question is where do I wire in a second power source (v2) for servos in the picaxe 28x1?  Thanks in advance for putting up with my beginner questions