When I click on Modify, Convert, Polgons to subdiv. I dont get the blue box around my sphere. When this happens i cant select the side face on the box to move it out. Is there something I have turned off. Everything goes fine until this point, I cant go any further because it doesnt put the box around it? Please I help....I am a newbie and this stuff facinates me. I just want to complete the simple dog, then I can move on to something else. Thanks in advance.

Thomas Hazlett