What does shaped and unshaped mean?
A shaped service is a moderated way that data is delivered to your computer through your ADSL line. Certain things are given priority over others, such as websites, are given priority over email being downloaded. e.g. If you are downloading your email, and surfing the web, you will get to the web page first before your emails have completed downloading.
An unshaped service has no prioritization of any traffic and operates on a "first come, first served" basis regardless of which protocol is used.