LogFAQs > #914848047

I generally use the Modified Block format, mainly because that's what I was taught in school, and I think it looks snazzier than the Formal and Semi-Formal formats.

http://www.savvy-business-correspondence.com/image-files/businessletterformat-modifiedblock.jpg

You basically tab over towards the middle of the page and put your name and address, then 4 carriage returns, then the recipient's name and address along the left margin, one carriage return, then the greeting (Dear Mr Smith, or To whom it may concern), another carriage return, then the body of the letter, one carriage return, then tab towards the center of the page (aligned with your address above) and insert your closing (Sincerely,), then 4 carriage returns (which leaves space for your signature), then tab towards the center again and type your name (and optionally, title on a second line)