Here's what I've done:

1. I had 3.4.7 installed. Tried to uninstall it but it failed part way through.
2. Manually uninstalled 3.4.7 by deleting the files, folders and reg keys and values.
3. Uninstalled previous JRE and installed 1.4.2. Installed fine.
4. Tried installing 3.6.15 but it refused because it claimed 3.4.7 was still installed. Rechecked my work and found a few stray items belonging to 3.4.7. Removed the items.
5. Tried installing 3.6.15 again but no matter what I tried it would always fail part way through the file copy.
6. Read FAQs and found that I could try installing multilingual version which uses a different installer.
7. Downloaded and installed multilingual version. Installed fine.
8. Restarted computer.
9. Tried launching 3.6.15 by clicking the desktop icon. Screen goes completely black for 3-4 seconds and then returns to normal. But application doesn't start. Checked running tasks and it's not there so I assum it is not running. It's as if the app wants to start but can't.

I'm running Win98 SE on an AMD PC. Any help would be appreciated.

Thanks,

Joe