Only 32 bit version updated, 64 bit remains old

Not sure if this belongs here, but...

A friend bought a new laptop and of course I am the sysadmin.

After updating Java (JRE, the web plugin stuff, not JDK), I checked by "java -version" and I saw I still have 1.6.0_17 in stead of update 24.

Afterwards I noticed that I have two copies of java, one 32 bit and one 64 bit (it is a 64 bit Windows 7 system).

The 32 bit version is 1.6.0_24.

So how to update the 64 bit version?

(and why doesn't the installer do this automatically?)

I tried running the 64 bit version of jucheck.exe .... and it started installing, but the claims, this version is already installed. But it allows a reinstallation, and I chose that. It installed, but afterwards java.exe still claims version 1.6.0_17

Any recommendation?
Uninstall the 64 bit version? (if there is a separate item in Control Panel for it)

Regards,
David

> Uninstall the 64 bit version? (if there is a separate item in Control Panel for it)

This is what I did.
The web browsers use the 32 bit version, so it should be enough.

CMD now can't find java.exe, but I can live with that.

Uninstall and then reinstall the 32 bit version. The uninstall of the 64 bit version probably removed C:\Windows\system32\java.exe. By reinstalling the 32 bit version that file should be present again.

Reinstalled 32 bit version, but in command line java.exe is still not found.

I don't care.
The user will visit one or two Java websites per month and run zero Java apps.

Thanks for help anyway.