Can you ping whatever tiscalis home page is ?

Quite often with these braodband johny's you have to hit some 'verification' page & fill in 'stuff' there, before it'll let you loose on the world ... otherwise their dns server don't want to play with you ! (I ain't sure of the tiscali proceedure, but is 'usual' with many others).

You will of course have noted by now that 'service wise' tiscali are pants, because of course you should be able to ask them all this for free, until at least YOU break it rather than their setup 'stuff' being pooh ...