Up until last night, I was able to unzip files on my computer. I recently bought a new Windows Vista Home Premium Edition just a few weeks prior and I have been able to use these functions to extract files in My Sims2 games as well as view manga on line in a slide show format like the one in Photogallery. Unfortunately, I accidently switched the default program to open all files Photogallery which resulted in none of my mangas opening and the Sims2 zip folders also being affected by this change. I want to get it back to the way it was! But I don't know how! I want to go back to whatever I was using to view my mangas and play my in game hacks! Does anyone know how to fix this??