Aah I see.
Thanks guys  :)

there is a fee .. and the fee for asset creation depends on the length of the symbol you want to register.
If you buy ABC (pretty expensive), then ABC.DE will be pretty cheap :)

I'm not sure, but I have paged @xeroc which may know for sure.
There is also this page, if it helps any: http://cryptofresh.com/fees

are there any asset creation fees for creating a child asset under the parent UIA.
If so, is the fee the same as creating a parent UIA.
Thanks