How many levels of the categorical level variable are there? You will only get a single dummy variable if the original categorical level variable has only two categories. Otherwise you will get more than one dummies. This thread answered the theoretical question we thought you were asking. How many levels can a categorical variable have. Not if the output you got was accurate (which we have no way of knowing without seeing it and knowing what your original variable is).
The answer to whether you want an intercept depends on if it makes substantive sense to have one and details of which specific type of regression you are running. The convention for OLS regression is to use an intercept. If it makes no substantive sense to have a value of the DV when all your independent variables are zero you may want to modify or eliminate it. But if you do so you will have no comparison group to compare your dummies to. Then you will have to, as dason noted, run a variable for each level of your categorical variable.