A Question About Statistica

Hi all. I want to ask a question about Probit Regression ın Statistica 7(Statsoft). There are 4 vairable types in Statistica 7 when you want to use probit regression. These are: Dependent, Categ.(Factors), Continious predictors,Count data. I know the meanings of dependent variable and continious predictors. But what does Categ.(Factors) and Count data mean? Categ.(Factors) mean Covariate or somethin like that? It would be great ıf you give some information about my questions. Thanks from now.