It's so long since I installed java on win98 I can't remember what the procedure is but from what you have said it looks like jar files aren't associated with java.exe. If jars have a word icon then presumably they are associated with word so you will need to change the file association. And before you ask, sorry but I can't remember how to do that on Win98. However there are probably sites that will show how to do it or you could ask in a windows forum.