HI - I've installed the stand-alone Force.com IDE.  And when the IDE tries to start, I get the following error, which I cannot get past:

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Forceide
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JVM terminated. Exit code=-1
-Dfile.encoding=UTF-8
-Xms256m
-Xmx1024m
-XX:PermSize=128M
-XX:MaxPermSize=512M
-Djava.class.path=C:\Program Files\salesforce.com\Force.com IDE\../Common/plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
-os win32
-ws win32
-arch x86
-showsplash
-launcher C:\Program Files\salesforce.com\Force.com IDE\forceide.exe
-name Forceide
--launcher.library C:\Program Files\salesforce.com\Force.com IDE\../Common/plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519\eclipse_1206.dll
-startup C:\Program Files\salesforce.com\Force.com IDE\../Common/plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
-install C:\Program Files\salesforce.com\Force.com IDE
-configuration C:\Program Files\salesforce.com\Force.com IDE\configuration
-vm C:\Program Files\Java\jre6\bin\client\jvm.dll
-vmargs
-Dfile.encoding=UTF-8
-Xms256m
-Xmx1024m
-XX:PermSize=128M
-XX:MaxPermSize=512M
-Djava.class.path=C:\Program Files\salesforce.com\Force.com IDE\../Common/plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
---------------------------
OK   
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Any ideas anyone? 

I have uninstalled previous Java versions, and installed the latest Java runtime.

2nd machine this happened on.