1. Look up IEFIX on google.com and see if that fixes it.
2. It's unclear if you tried a Shift-right-click Open With and associated the file with what application you wanted.
I recently installed the Mozilla Firefox browser in two PCs, both with XP. On one, Firefox automatically changed the HTM file association from IE to it, with HTM files on my hard drive carrying the Firefox icon and opening in Firefox when clicked. I would like the second PC to do the same, but it will not. I even went into file types and changed the association manually. However, HTM files still carry the IE file icon and now will not open at all when clicked.
Any ideas as to how I can remedy this?