X−μ=LF+ϵ

So if I use SPSS for extracting factor scores from a factor analysis of several variables, then am I going to get factor scores for mean subtracted variables? Actually my intention is to use the factor scores as IVs along with some IVs that were not used in the factor analysis, which is, as far as I know is a valid procedure. But if I get estimated values of F (factor scores) from (X−μ), then what should be done to the IVs which were not included in the factor analysis during regression? What should I do with the DV? Should they also be mean subtracted?