You can find it here.
From a NY Times article (by Reuters)...
LONDON, July 6 (Reuters) - The surviving parts of the world's oldest Christian bible will be reunited online on Monday, generating excitement among biblical scholars still striving to unlock its mysteries.
The Codex Sinaiticus was hand written by four scribes in Greek on animal hide, known as vellum, in the mid-fourth century around the time of the Roman emperor Constantine the Great who embraced Christianity.
Not all of it has withstood the ravages of time, but the pages that have include the whole of the New Testament and the earliest surviving copy of the Gospels written at different times after Christ's death by four of the Apostles: Matthew, Mark, Luke and John.
The bible's remaining 800 pages and fragments -- it was originally some 1400 pages long -- also contain half of a copy of the Old Testament. The other half has been lost.
Read the article here.