IFRAME issues in IE5.5

Having iframe issues in ie 5.5
on reboot a registery error occurs which states file or service in registery cannot be found. all it identifies this file by is a small square on the line where a file name or key would be included. after saying OK anothe message suggests editing the key removing it from registery or removing the software it refers to.
if I launch pages created for instance with frontpage 2000 my preview shows images as broken. ie5.5 shows same result however the frames load andimages wont. Any ideas?