How can I get the Vatican Pass to enter St Peter's Basilica, Sistine Chapel etc? Is it available online?

You don't need a pass to enter St Peter's Basilica, it's a church and anyone can go in there. For the Vatican Museums and the Sistine Chapel you will need to buy a ticket. Ticket prices, opening times, and more information is available on the Vatican website at: http://mv.vatican.va/3_EN/pages/MV_Home.html and http://mv.vatican.va/3_EN/pages/z-Info/MV_Info_Ora... Entry tickets cost 15euros.

A gown code is enforced for get entry to into St. Peter's Basilica. The code relies upon what's seen "modest" and "suitable" gown for traveling a Catholic church, and vacationers and travelers are reminded that, even if St. Peter's is an architectural and inventive monument, that's first a place of worship and prayer. The gown code forbids: hats for lay adult males interior the basilica shorts/skirts above the knees sleeveless shirts shirts exposing the navel shirts for women that demonstrate cleavage shirts which comprise profanity intense rings using cellular telephones is likewise prohibited, as is smoking.

just got back saturday. It was fifteen euros to see the vatican museum which has the sistine chapel.

Entrance is on the north side of the vatican city.