Which 40.5mm filters can be attached with the Nikon Coolpix AW100?

After much though I am planning to get the above camera model but I have noticed it comes with a 40.5mm filter ring part. I have a knack and looking forward to decent macro photography. What 40.5mm lens would be the best for the purpose and which company should be trusted?
Any other creative suggestions regarding the 40.5mm filters and adapters?
>>> Which 40.5mm filters can be attached with the Nikon Coolpix AW100?

My camera lense won't come out?

Okay, so I just got it from my church rummage sale and it came like this.It's a Nikon coolpix L18. I would take it to a shop but we absolutely don't have enough money and I've wanted a camera for years. All it says on the screen is "Lense error". Please help me, anything is helpful.
>>> My camera lense won't come out?

Alternate firmware for Nikon Coolpix L100?

I have a Coolpix L100 and it's having difficulties focusing. There is no manual focus option with the current firmware, so I want to put some open source firmware on it (like the CHDK for Canon cameras).

Is there such a thing for Nikon Cameras?
>>> Alternate firmware for Nikon Coolpix L100?

Nikon Coolpix 8700 won't turn on?

It was working fine before I took the memory card out and then put it in my computer, then when I tried to put it back in again, I started putting it in the wrong way. Now it's hard to get the memory card in and the camera won't turn on. I changed the battery to a different fully charged on, too. Did I break something?
>>> Nikon Coolpix 8700 won't turn on?

Can i change the recording file type on my nikon coolpix l110 from a. MOV to WMV?

Yeah this is really pissing me off, i want to edit some film but its in the wrong file type i can record again thats not the problem its just i use a windows movie editing program and it really doesn't like anything to do with quicktime stuff. ಠ_ಠ
>>> Can i change the recording file type on my nikon coolpix l110 from a. MOV to WMV?