I searched through the group and still need to ask for help.

I have a brick house with aluminum windows/double pane. These windows
sweat like crazy in the winter due to our heating with gas/LP. I would
like to install another type window inside these windows. The present
windows were installed prior to the brick and were nailed to the
exterior side of the wall studs, so removal of these would not only be
painful but expensive as well.

I would like to just use the current windows as a storm window and
install an double hung style window inside of the current windows, but
am not sure this is possible. I have two 3.0 X 6.0 windows, three 3.0
X 5.0 windows, two 2.4 X 3.0 windows and one 6.0 X 6.0 mulled window.

What options do I have?

Thanks for your assistance!!