Yesterday I found out how to turn on the lights with a flip of a lever. Here is a tutorial:
    1:Make a building with a ceiling you can reach comfortably.
   
    2:Get on top of the building you just made. (take redstone with you)

    3:Wherever you want the light, destroy that/those blocks.

    4:Put redstone leading to the hole.Should look like this

     &-hole 0-What your build is made of *-Redstone

     000000000000000000
     0000000&********00
     000000000000000000
   
   5:Now go on the inside and make a hole next to the redstone anywhere.Put a lever on the side of the block so that it is facing away from the redstone.

   6:Go on top of the building again, this time place a block atop the hole wher the lever is.

   7:In the first hole you made place a redstone lamp.

   8:Cover up the redstone lamp and your ready to go!

Or use torches.. Facts from Miner do di da doh!

True, maybe they will light your wood wall on fire! O_O

Well I do want pistons to be activated, and just a little hint, can you tell me how to get pictures from minecraft
so I can post some pics of how it looks?

Hit the F2 key (screencap). Hitting the F1 key would un-display the item bar/chat/GUI so it might go better if you hit F1 then F2. The pictures can be found in the minecraft folder (in Windows, type in %appdata% in the Start Menu, then find the .minecraft folder, then the screenshots folder). 

Thank you guys, but I think I will not put up any pics, you will have to build it
to see it! Ill probably post a new redstone tutorial about a cool trap!

Hey Meep (and redstone enthusiasts),

Tonight I made disco lights at my buddy's house in Oceanview. Here's a peek--


I tried to do screenshots for an animation, and here's the best that I can Frankenstein up:


The infinite-loop had to be turned off and on manually, instead of a switch.