stepwise on generlized linear model

Hi-

Can anybody give me a quick answer that whether step() can be directly 
applied to a glm model including both continuous variables and categorical 
variables (by factor())? Maybe my data is not suitable, I applied step() on 
my glm object and did not get any reduction (i.e., returned full model).

Can gl1ce() in lasso2 deal with glm model with both type variables?

Thanks,
WC