Use of computers in online play?

At one end of the spectrum I know that it's completely permissible to use databases and other sources to explore the opening of your online game. (There is even an "explore" button right on the page that links to an opening database).

And on the other hand I know it is COMPLETELY wrong, criminal, and unethical to use a computer to suggest a move to play against your opponent.

In the middle, though, is it permissible to play your current position against a computer, assuming the computer takes on your opponent's position? That way you are using the computer to come up with best play for your opponent while you try to generate optimal responses in your own head.

I haven't done this, of course, and I would certainly never even consider it unless given the go-ahead by those more experienced in online play.

@OP: I don't think it's ethical to play your current position versus the computer, and

@Luigi_Fan: I think making a move that a computer recommends but not knowing why is almost certain to end badly :)

I play online chess based on my own ability and my own ability only. In that way I can get a rating showing where I am and how much I improve/decrease in strenght through the weeks. 
However it's not possible to keep track of who uses a computer or not soo I say go ahead, they wont catch you, but what do you get for it?

Suppose the computer makes a threatening move that you didn't see? Then you could prepare for the move from the current position, and it would not be because of your own skill.

@OP: Topics related to cheating should be discussed only in the Cheating Forum:

http://www.chess.com/groups/home/cheating-forum

Although you're not using the engine to direclty suggest a move for you, you are using the engine to assist you with the game. So it's not allowed.

Bottom line, hands off computer except for opening database. Period. Good to know, and can't be emphasized enough.

The ONLY time you're allowed to use assistance is in opening using an opening database on ONLINE chess only.  Using outside assistance in any other form is considered cheating.

Discussions about cheating should be kept to the cheating forum, not in the public forums.

http://www.chess.com/groups/home/cheating-forum