Unlock code w/buttons??

Not real sure how I ended up with an Android, I could hardly use the little Pantech I had. I have looked thru the FAQ and the android forum and don't see anything about the buttons and no home screen. I have an HTC Inspire 4g that I have had for awhile and my granddaughter was using it because I just don't know much about it. Anyway, the point of my thread is she has locked it and I can't make any calls or text but I can receive calls. When I turn it on, I get the screen with the 9 "buttons" that says draw pattern to unlock. I don't get the home screen or any other screen, just those 9 buttons, well, and emergency calls. I did a google search trying to find how to undo this but none of the directions show this screen. I did find out that but can't make any calls. Thanks in advance for any help!

 

That is what I was so afraid of. Since I couldn't find anything, anywhere about those pesky 9 buttons. Do you have any idea how many times we can try different combinations before the phone is totally useless? Probably should take it back to at&t and see if they can help. I do so appreciate you taking the time to post. Thanks