The usual is:
1. The association is not what you want. Just Shift-Right-click, use the Open With and tell it to use your new selection.
2. If the Temporary Internet Files get too many, IE saves such as BMPs. No fix from Microsoft on this annoyance, but you can empty the temporary files and it works again.
I have windows 98. Somehow I have changed how My jpgs. are saved. They are saving as a kodak photo instead of the windows icon. My current jpgs. in the windows icon will not open when clicked on. Any help would be appreciated.