You say: "Before my screw up"...What exactly happened?
On our Windows 98 machines, Internet Explorer is the default program for .gif files. Try the procedures below:
Go to one of the .gif pictures, click on it once to highlight it, then while holding down the Shift key, right click on the file, then choose "Open With" from the menu. When the "Open With" box opens, make sure there is a check mark in the "Always Use this program to open this type of file", then scroll down to "Iexplore" and double click it. This will set up the default viewer for opening jpg files. You can always set up another type for those files if you want. Do this same procedure with .jpg files, Iexplore is their default opener.
Do the same for .bmp files, except when you open the "Open With" box, scroll down to "MSPaint" and double click that. That is the default for bmp files.
Hope this helps.
screwed up my PC so that I cant view gif files. Can someone tell me which program is used to open gif files? Also, before my screw up, I could open jpeg files and have a preview on one click. Now that doesnt happen. Any help would be appreciated. Thanks