We got Tiscali TV in January and one favourite Video on Demand channel is C1 as i have found some of my favourite programmes on there. I've watched C1 a few times but i was wondering do they charge extra when ever you watch a Video On Demand channel like C1?

No, if it's in your pack then everything on channels like C1 is free. You will always be warned and asked for your PIN before you are charged extra for anything.

Thats if your pin request is activated in the options,its off by default.

That's a good point, vangeezer. I have mine set to request the PIN just to avoid accidentally purchasing something.

I believe we have the Entertainment Extra pack as we only have channels like UKTV Gold and sci-fi.

We have the Tiscali Variety Pack + Entertainment Extra pack.