SQL Developer install problems for Windows 7 Home edition

Hi there,
I understand Windows 7 64-bit is not supported for oracle 11gR2 but I installed it anyway.
This is not my problem.
I am trying to install SQL Developer and am getting this error when I click on the set up:
Unable to launch the Java Virtual machine, located at path:
C:\Program Files(x86)Java\jdk1.6.0_21\bin\msvcr71.dll
When I check the version of my java it is correctly displaying 1.6.0_21 for my 64 bit.
I read that you need the 32 bit one installed as well and I do. In my Program Files there is a java and a \jdk1.6.0_21 folder. In the bin directory it does not have this .dll:
msvcr71.dll
Is that the problem, because i have heard of other people getting sql developer working on their Windows 7 home laptops but they are old posts and I'm not getting any reply.
I also changed the Environmental variable for the path, such as:
C:\Program Files (x86)\Java\jdk1.6.0_21
C:\Program Files (x86)\Java\jdk1.6.0_21\bin
C:\Program Files (x86)\Java\jdk1.6.0_21 /bin
and none of the 3 above worked for me either.
Any suggestions are appreciated!

I unzipped the sql developer download to C:\Windows and it unzipped fine. I went into my folder of sql developer, double clicked the sql developer.exe and it asked for the path for java. I clicked Browse and the default was C:\Program Files(x86)\Java\jdk1.6.0_21\bin so I chose the java from this folder. It accepted the argument, tried to start sql developer, and came up with the same error, so something is still not right that I am not understanding??

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