TTcpServer

Hi people,

i am just getting into playing around with creating my first delphi network
app and i am having a few newbie issues.

I am using borland developer studio 2006 (turbo delphi), i have a form and i
look down the tool palette list.  In the list is a section (Internet), and
in this section is TTcpClient and TTcpServer.

Now if i drop one of these onto my form, then the code then moans about
TTcpServer being an undeclared identifier.

I must be missing something rather basic here.  Any help would be warmly
welcome!

Thanks