stuck on the bit with the mummy

sorry cant be more specific, just on the goal with that mummy in the desert and he said to find his sarcophogus and i did, i have two (is that weird??) and then i went back to him and he said to put it somewhere safe where only i can get to it. i thought the vault so went down but it wont let me put it anywhere in there and i cant seem to get past that particular goal (is still says i have to find the sarcopogus in the desert and i have 2) and that evil woman thats in the penthouse just tells me to leave her alone in the bovine shrine, urhhh can anyone help or am i doing something wrong?? thanks!

oops just thought about searching the forum, sorry, so u just put it in the managerial suite and its done?? and you need 3???

you have ot gointo the desert and then you have to dig it u with you know the decter thingy

then place it in your room