If your site is "ready" and "good to go", AND it is already hosted on your GoDaddy account, then I am afraid that I do not understand why you cannot "go live".
If your site is in a virtual directory and expect for your site to be viewed when the visitor goes directly to your domain name, then all you might need to "go live" is a redirect from the root of your site. This can be done a variety of ways. Probably the best way is to use an ASP or ASPX page on the root of your site and redirect the visitor like so:
In Default.asp file on your web site:
Response.Redirect("virtualdirectoryname/Default.aspx")