Sigma is there, both in the Symbol font, and in the upper regions of the
normal unicode set (along with the rest of the Greek alphabet).



"alaa" wrote in message
...
hi,
i am trying to write my econometrics lecture notes on word. the thing is i
cannot find symbols such as Sigma with the uper and lower parts also the
square root. i would also like to insert normal distribution curves and
matrices.
i would really appreciate your help