Microsoft has a nice little scam where they let you build things that won't work with a standard web site. These are called "Front Page Extensions". Your web host then has to buy special Microsoft software to make your site work. Web hosts, including Bravenet pass this extra cost back to the customer. Of course the inexperienced use the extensions thinking they are building a normal web site and then get all sorts of problems on upload.
You will find the FTP parameters by logging in to your account and instructions for uploading sites using extensions in the knowledge base.
