im doin the misssion fer the 3 piece amulet and the last peice is in sarathaal but cant get in... think the mission is called ledgend of gauldor ...how do i get in to the last tomb???

You need to join the mages college in Winterhold. Tolfdir has the key and wont open it till you get to a certain point in the MC quest.

ok ive negglected those mission guess il have to get back to them thanks

There is an Alteration mage (I believe) you have to talk to in the Mages Collage in Winterhelm you need to talk to... He does a training session in the Hall of Elements and 3 others... After all that, he and the other 3 all go to Sarathaal...

Unfortunatly another quest you have to join the Mages Collage to finish?

Yeah not sure, because it was after the MQ did I decide to start this quest...

Tolfdir starts the Saarthal quest pretty soon after you take some "first falls" with him, demonstrating wards and such. He will walk from the college to the site, so you can either follow him or head there and wait. He will have to battle a number of things on the way, though.