Looks like it's some mess.
But let me start asking: do you need Java? Many people don't.
If 1.7u13 (the most recent version) says it's installed I assume it is, more or less. Did you ever use the Java icon in the control panel in the past? So let's do a basic test: does Java work?
If you don't trust it, try System Restore back before 2 days ago. But that will undo all your other updates also (if it works, sometimes it doesn't for some unclear reasons). That was the moment I started using Acronis so I could go back to the image of my OS disk.
-I have XP Pro w/SP3, FF
-Two days ago, I began updating all software. Only one problem, that I'm getting help w/elsewhere.
-Today, I get an error window: jusched.exe: App name: jusched.exe; ModVer: 5.1.2600.5512; AppVer: 18.104.22.168; Offset: 000187f1; ModName: user32.dll.
-In Downloads, I put: jre-7u13-windows-i586.exe. When I attempted to install this, I got ...applicationdata\Sun\Java\jre1.7.0_13\java_sp.dll is corrupt
-I went to the Java Sun Website, that instructed to use offline installer. I got the message that the software has already been installed on your computer. Would you like to reinstall it? I chose "no".
-Java site has instructions to delete old versions - thought to be security problem. When I attempted to uninstall: Java 6, Updates 2, 5, 7 and SE Runtime Environment 6 Update 1, I got "fatal error during installation".
-I installed the newest Java Runtime Environment plug-in. A window came up indicating it was already installed (but Java 7 Update 13 - not plug-in - was already installed). I instructed to reinstall & Java Runtime Environment 1.7u13 was installed.
-I noticed the Java icon is now missing from Control Panel.
-Again, I attempted to delete old version, with same results as above.
-I came here for help, as I cannot pay $50+ for Java help.
-Please keep any instructions basic and simple - I don't understand computer terminology.