so you activate the joint tool and try to put joints into the scene but nothing shows up?
check to make sure that joints are visible in that camera. I think the option to see what stuff shows is in the show menu of the panel.
Also, check the show x-ray joints button at the top of the panel (or find it in one of the panel's menus)
I'd give you a screen shot but I don't have Maya on the computer i'm using right now
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Objective C, C#, Java, MEL. Python, C++, XML, JavaScript, XSLT, HTML, SQL, CSS, FXScript, Clips, SOAR, ActionScript, OpenGL, DirectX
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D