xbox live sign in

Hello Kevdon here with yet another question.
My daughter also plays TF2 but the problem is that she plays under my login. I have tried to set up her own gametag but it does not work for me. It seems that if you want to add another gametag you have to pay for another subscription. Is that correct or am I doing something wrong. Any help would be great as my Daughter will continue to givie me a bad reputation.

Kev 

your probobly doing something wrong, but i havent made two xbox live meberships yet =P
just make a new profile and try to log it in to live (if u dont know how just try to play tf2) then i think a thing will come up asking if you want to be on xbox live , do
the long sign - up thingy and ur done.

You will have to pay for different subscriptions to have gold LIVE accesss.  The acount will be silver, so it'll still be able to go on the store, add friends, ect., but for online play you need to pay for it.  Simply switch to it when you start up the system (logout at dash with "x", then log back in as other acount), and it should work fine.

Thanks for your help guys,
I figured that you would have to have a seperate subscription which in a way is a bit of a rip off.
So my daugher will continue to play TF2 under my profile and gametag unless she saves up to pay for her own.
So if I sound like a checky 14 year old girl then it is not me. But then again she might onlock some achievments for me.

Kev