slim to none, same as usual
Short answer: Look around in the grass, water, and caves a lot. Long answer: There is a 1:8192 chance of meeting a wild shiny Pokemon. Breeding a non-shiny Pokemon with a shiny Pokemon increases the odds of the Pokemon in the egg being shiny to 1:64.
No, you don't. Shiny Pokemon appear in Pokemon White version like every other Pokemon game, you can get them through breeding, a legendary could be one, or you could find one in the wild. However, using the Masuda method, which is breeding Pokemon from separate languages, it is more likely to get a shiny then in past games.
With breeding 2 normal Pokemon, the chances of getting a shiny Pokemon are 1 in 8,192. By breeding 2 Pokemon from different countries, the chances of the offspring being shiny is 1 in 2028. With a shiny female Pokemon and breeding, the chances of that Pokemon being shiny is 1 in 64. so, yes, it is possible, but it takes forever.
The Masuda Method is breeding a Pokemon of a different nationality with a Pokemon of your nationality (a Japanese Poké with an English Poké), increasing the odds of a Shiny by 75%
no
the chance of getting a shiny Pokemon is 1/8496.
Breed two shiny pokemon.
Either cheat... OR you can use the pokeradar and build up a really long chain. Eventually, this will find you a shiny pokemon. OR you can wander around and take the tiny chance that you will randomly encounter a shiny pokemon. OR you can slightly increase these odds by breeding different nationality pokemon, the baby one will be slightly more likely to be shiny.
Yes, shiny pokemon can be breed. However, breeding shiny pokemon does not increase the chances of having shiny offspring, except for in Generation II games.
Yes, it is possible, but it has the same odds of finding a shiny wild Pokemon (1/8192).
1/8192
I believe is one out of every 4,096 pokemon