sikarkades:
check out these switches:
http://www.allelectronics.com/cgi-bin/category/700400/Rocker.htmlI like allelectronics.com, but their shipping is a bit high.
You might find just what you are looking for at radio shack. May even be cheaper after you take away allectronics shipping charge.
But the pictures at the link will give you an idea.
All you need is a SPST on/off switch, capable of carrying your house voltage (120 in USA), also it needs to be AC (Alternating Current), hence "120 VAC", but if the switch is rated for more than 120 VAC it will be OK, ex: 240 VAC.
Also it needs to carry at least ever how much current your lamp will draw. (Probably no more than an amp or two), but to be on the safe side, get a 10 or 15 amp one.
Hope this helps. If you have more questions on how to connect it up, please feel free to ask.
*Edited to add following information**
I dont know what type of switch you want to use, but I think this one would look neat on an arcade, plus it mounts in a round hole (easy to drill), and it can use quick connect crimp terminals. It should be rated just right for your lamp, unless your lamp's voltage is 220.
http://www.allelectronics.com/cgi-bin/item/RS-144/700400/SPST_ROUND_ROCKER_SWITCH_.html