Try Pictures with Words
Skitch is designed just for this, is free, and very easy to use.
Try Pictures with Words Free iPhone iPad App
Love skitch as well-many of our forum staff use it for instructional posts. It's very useful!
iPad 2 ~ Wi-Fi ~ 32 GB | MacBook Air 13-inch 4 GB RAM/128 GB | Apple TV (3rd Gen) | iPod Classic 80 GB | iPod Touch 32 GB (4th Gen)
+1 for Skitch
CLOSING APPS: If an app has stopped responding or closes on launch, try the following: * Home screen * click the Home button twice * Tap and hold on the app * When it jiggles, tap the (-) to close it * Double-click the Home button and re-open the app