In Formal letter^x, Invitations^x, Invitation letters^x

Hello, I'm not sure of how to write a formal letter to invite a speaker to give a workshop in my school. The workshop is about how to present yourself in front of corporate "big shots". Can anyone advise me on how the format of the letter should go? I've not written formal letters before...

Hello, I am Korean and I live now in Seoul. In recently, I write an English letter on behalf of my aquaintance who is musician and have a concert in his own house in Seoul. He has invited pretty many foreign performers to his house and had concerts since 2002. On January next year a...

hello. Im Maricel from Philippines, can you please help ne to write an invitation letter regarding Ist meeting of the homeowner association

An informal letter to a friend or relative is a relatively simple task, Anon. How about posting a draft copy and we will take a look at it for you?

Hello all. I am new here and I hope someone who's native in Eng. can help me. (ASAP) I need to turn this in to my boss by tomorrow. This must be a formal invitation letter. Please check my grammar and also my writing style (I know it's really bad) Thank you in advance Dear Sir or Madam, ...