Applet witing to file

I have a quick question. I have a signed applet. In the applet I am trying to write to a file
FileOutputStream out = new FileOutputStream(m_File)
this throws an error. Even though the applet is signed. I found this information:
In Java2 JDK1.2, reading or writing a file, are not permitted for applets unless explicitly allowed by a permission in a policy file. JDK 1.1 is much harder to implement because your Applet must be digital signed to be trusted. With JDK 1.2 you can also apply security constraints to Java applications.
Do I have to create some permission file (POLICYTOOL)?
Can I just use the java.io.FilePermission with "write"?
thanks in advance

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jschell wrote:
rritoch wrote:
I am developing an applet (extends Applet but uses swing components) using JDK 1.6 (Though these problems still happen in JDK 1.7) and I am unable to get the applet to load on a 64 bit machine in most cases.
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>
2. Your only 64 bit tests have involved 2008/Win7?
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>
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