I want to set the timer for my samsung PL200 camera.

Look at your memory card. SD and SDHC cards have a slide switch along one edge. The position farthest from the metal contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

Assuming you mean the Samsung PL200, you may download the quick guide and the user manual from here.

To delete all photos, format the memory card.
To delete all individual photos, while viewing the photo press the [Fn] button then select "Yes."

Update the video codecs for the video editors you use on your computer.

Look at your memory card. SD cards have a slide switch along one edge. The position farthest from the metal contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

Here is the user manual for your Samsung PL200 camera.

http://downloadcenter.samsung.com/content/UM/201008/20100830102834921/PL200_PL201_English.pdf

Regards

Your camera has a rechargeable lithium-ion battery, and should have came with a charger. You'd need to remove the battery from the camera and stick it in the battery charger.

The manual can be downloaded here:
http://www.samsung.com/us/support/downloads/EC-PL200ZBPBUS

Sounds like a broken zoom switch to me. Sorry, but there's nothing much you can do about it. You will have to give it to a camera technician, because it's most likely a hardware problem and the camera has to be disassembled to see what's what. They are small mechanical switches and they use to break sometimes. Sand shouldn't affect it, unless some sand got inside the switch itself (don't see this often). I have repaired more than 1000 cameras and seen many various problems, so I can imagine. ;-)
Tom

Unfortunately it doesn't look like Samsung has the drivers available on their website. You should however be able to upload the photos from your camera using the software on your Mac.

It's underneath:-