Safari Developer Certificate on Windows 7 not working for me. What should I do?

I want to create a safari extension o开发者_开发技巧n my Windows 7 pc. I have created a safari developer certificate properly but I couldn't really install it. After some googling, I tried importing it into Personal and Trusted Root Certification authorities. But Extension Builder keeps showing "No Safari Developer Certificate." I even revoked the certificate and created a new one. Still no luck. Can anybody help me?

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When you enter something like certmgr.msc in the run command in Windows, you will get to see something like this:

So using the certificate consists of the following steps:

1. Save the file and run the command in cmd.exe as directed in the developer certificate generator in extension certificate developer.

2. When you are done, check the certmgr (shown in the image above) and see a certificate named "Safari Developer" installed somewhere near Certificate Enrollment Requests. Cut the certificate and paste one copy inside trusted root certification Authorities and another inside Personal.

3. Generate the csr file and install the file inside Personal folder and trusted root certification Authorities folder.

4. Extension builder will now recognize the certificate.