Hello mx98. I have a german win98SE as well and I'm using Firefox 3 with KernelEx. Some weeks ago I had to install my system from scratch and I had a different problem with FF3. But the solution might help you as well. I confirmed that I wanted to use FF as my standard browser but somehow it didn't work and IE was still registered as standard. So I installed Firefox 2 which is designed for win98, started it for the first time and everything worked fine and it was registered as my standard browser. After that I installed Firefox 3 over it and that was the trick. Everything is working fine. So try Firefox 2 first, run it one time and then try installing FF3 again.