Yes, if the parents of the child decide to raise him or her as a Jew, they baby is taken to mikvah as part of the conversion process.
The Mikvah is the ritual cleansing of a woman after her period, the reason being that blood is considered unpure and she has just had a period of blood! This article clears up a number of misconceptions about the Mikvah http://tiny.cc/mikvah
No, no one goes to mikvah on a daily basis.
There is absolutely no relation between baptism and going to a mikvah.
The mikvah
In Over Our Heads - 2010 Mikvah was released on: USA: 29 June 2010
Yes.
a mikvah
The mikvah attendant will make sure you're 100% purely clean and assist you in immersing yourself into the water of the immersion pool.
No, it's an immersion pool.
All water is kosher, there's no such thing as 'special kosher water'. A mikvah is simply required to have fresh running water from a natural resource.
No, the only Jewish ritual that baptism could be linked to is going to the mikvah because a mikvah is a bath. The meaning behind the two are completely unrelated though.