Could an omnipotent being create a stone so heavy that even he could not lift it?" If he could lift the rock, then it seems that the being would not have been omnipotent to begin with in that he would have been incapable of creating a heavy enough stone; if he could not lift the stone, then it seems that the being either would never have been omnipotent to begin with or would have ceased to be omnipotent upon his creation of the stone.
Simple, omnipotence just means God could bring about any logical event, but asking if he could create a stone so heavy he couldn't lift is itself a meaningless question, it's illogical to think a stone could be so heavy that it couldn't by physically lifted, God isn't made of body parts like we are and gravity was created by him.
OK, then gravity and physical things God isn't bound by, so he CAN create a stone so heavy that he can lift! But htat implies that God would not have been omnipotent to begin with in that he would have been incapable of creating a heavy enough stone. This is why it's called a dilemma.
We'll have to actually argue this again I think it went too quick like a instant messanger, I'm new to this site too and it seems that debates on here are more elaborate than the site I'm used to. Want a do-over?
Anyways, it IS meaningless to ask if a heavy stone can be too heavy to lift by omnipotence, it's simply not logical that a stone be unliftable and also a stone, for that would be a stump attached to the ground.