How would one look for and confirm existence of a graviton?

Someone was speaking to me about perhaps one day discovering the graviton, but to me it seems unlikely, although I'm young and essentially quite naive, so am coming to you physicists to ask 


What actually is the likelihood of finding it? 
How would we find it?



Question: What's the best way to scan in hundreds of pictures?
Answer: Another suggestion: wait until you have money to throw at the problem. It's probably not too difficult to change the storage method now to minimize further deterioration, and then either save / wait until you have a better income / find a relative with money for the next few years and then do it.