How do i reset the default file viewers? beacause i just installed Photoshop 7 and after making a image and saving when i go to preview it it opens up PS7 or PSP7 not the default Preview option.
When you are saving the image, I'm assuming that you are saving them a .psd file. When you are saving the image, make sure that you select JPEG from the little drop down list under where you type the name of the file.
I had this problem when I first installed PS7 so I think this is your problem too.
Open a Windows Explorer window. Go to Tools > Folder Options... > File Types. You can set any kind of file to open with any program here including the default.