When did women first take part in the Olympics?

Women first competed at the 1900 Paris Games in lawn tennis and Golf. Over time more women events were added, and currently Boxing is the only Summer Olympic sport that does not include events for women, though this is set to change in 2012.
The first women competitors were at the Amsterdam games in 1928.
1900 C.E. in Paris In 776 BC, when the first Olympics were held, women were excluded and created their own games, Games Of Hera.