Preview jpeg file in Windows 98 Explorer

I have recently loaded MGI Photsuite software (to support a digital camera which prduces JPEG images) onto my computer. Unfortunately now I am unable to preveiw any JPEG files in Windows Explorer while in “View” … “As Web Page”. I have setup “Quick View” but this is not as convenient as the preview in Wndows Explorer itself as, at times, I have a lot of photgraphs to work through.
How am I able to reset the computer to generate previews in Windows Explorer just by clicking onto the file?
Iam using Windows 98 and Explorer will still generate previews for BMP files just nt JPEG files. Thank you for your help in this matter and I look forward to any help you can give me.
tonyj