Thank you for replying and the warm welcome Tintman

My windows are indeed dual pane. The condensation is on the inside NOT between the 2 panes (thank Gawd).
In the winter, the condensation turns to water and drips down the window thus causing some molding....YUK!!! I keep washing it off but Im thinking if I could keep the curtains open, it wouldnt happen. I keep the curtains open in the kitchen and NO condensation!!
I love my privacy and if Im to keep my curtains open, I most certainly need something on the glass to block off noisy neighbours. Im not wanting to get that cheap stuff you can buy at Walmart's as its not private enough for me. You can still see a shadow through it. (you know that clear plastic you peel off the back and stick to the window).
BUT, if its at all possible, Id like something that can be taken down..........what if I want to sell my house and buyers dont go for it?
I might be asking for something not available yet? lol I had tinted windows in my car before, it was great in the daytime, nobody could see inside, but if the light was turned on, you could still see a little. Thats NOT what Im looking for. It needs to also work at night when the lights are turned on.
I live in the Province of Quebec, in the burbs outside Montreal.
I sure hope someone can help me and knowing I wont need to call Billy boy is good news LOL.
Thanks