I have a problem deleteing a picture?

From my coolpix l18, I seemed to have it locked up and can't figure out how to unlock this one picture. I have protoect and then I get lost.can somepne help me

thanks
>>> I have a problem deleteing a picture?

Can I hook my camera up to my computer and record video saving it straight to my computer?

I have a Nikon Coolpix L105 camera and an HP computer.Is it possible to connect my camera to my computer and record video while it saves straight to my computer? Or at least so my camera doesn't die because recording takes up so much battery life? Thank you, and information on the matter would be helpful. Possibly a program that will let me do this, or something. Thanks.
>>> Can I hook my camera up to my computer and record video saving it straight to my computer?

Nikon cooplix p510 or Sony a37?

I´m considering to buy one of this cameras, so I´d like to know what´s the best and why. If you think I should buy another one, please tell me which one. Thank you
Added (1). It would be my first camera
>>> Nikon cooplix p510 or Sony a37?

Nikon Coolpix P510 vs Nikon D3200?

Which one is better?
>>> Nikon Coolpix P510 vs Nikon D3200?

Best of these digital cameras?

Panasonic LUMIX FZ60 Black 16.1 MP

FUJIFILM HS30EXR Black 16.0 MP

Nikon Coolpix P510 Black 16.1 MP

All three are around the same price
>>> Best of these digital cameras?