I can. I have Vista Home Premium, SP2, Java 6 Update 20 (build 1.6.0_20-b02). I also have a Java icon in my control panel but neither 'Java' or 'Sun Microsystems' is listed in Start > All programs.
Here's the website, which you're not allowed to access, sorry about that, I cannot give my login stuff, but here goes anyway:
https://www.bnsf.com/bnsf.was6/emu/main
This website requires an applet to run, which used to work for me everyday. (No, I don't have a clue what changed, lots of stuff changes everyday.)
I cannot uninstall using Control Panel. When I hit 'uninstall' nothing happens. I've enabled Java in IE 8 Tools > Manage Ad Ons, and jumped up and down three times. I've also reverted IE 8 to default options using Tools > Internet Options > Advanced >
Reset and jumped up and down five times.
Finally I got nervous and ran some Windows Live scan program, which fixed 397 registry errors and made my HP lappie zip along at Interstate speed, but no Java jivin' yet.
When I checked Sun's website I ended up in their forums where they were saying things like edit the registry, which I can do but not ready to try that yet. My Java directory is C:\Program Files (x86)\Java
If you can help me I'll pay it forward and jump up and down ten times.