MannCorp Inc review: Fake info about the prize and they wanted to get money from me 1

I got the letter from the company MANNCORP Inc. They told me that I won large sum. I was happy, ‘coz I already tried several times. At this time, they told me that the prize was about $100, 000. Ok, I asked how I could get my prize, but here all the crap started. They asked to provide several payments and told me to transfer money through Western Union. I think that it is scam. Please, post comments about your experience with them.