All you need is a Google Gmail account to sign into feed burner, and a blog link to use for Feedburner.
Type in your blog Link in the text box at the bottom of the front page after you login to FeedBurner. Click Next and follow the instructions. When done, go to publicize tab on the top of the website.
Click on the E-mail subscription link on the left sidebar then click activate. Now there should be options for using the provided HTML code to paste into your website template, or you can use the widget option if you have a Blogger or Typepad blog.
Read my full tutorial with pictures and text on my blogspot blog :: Add an e-mail subscription link to your blog with Google’s Free Feed Burner website.