Help!!AccessControlException:java.io.FilePermission

[SundarS2@xxxxxxxxxxxxxxx (SundarS2@xxxxxxxxxxxxxxx)]

Hi All,

I have posted this question before but there was no reply.Hoping to get a
reply this time.
I have an applet signed using the JDK1.2.2 keytool.I have the policy file in
C:\windows directory.
My applet needs to read a file from the local hard disk and upload it to the
server.

But Iam getting the following error.
java.security.AccessControlException: access denied (java.io.FilePermission
file:\C:\sundari\cancel.gif read) 	
at java.security.AccessControlContext.checkPermission(Unknown Source) 	
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source) 	
at java.lang.SecurityManager.checkRead(Unknown Source) 	
at java.io.FileInputStream.<init>(Unknown Source) 	
at java.io.FileInputStream.<init>(Unknown Source) 	
at FileUploadTest$EventHandler.actionPerformed(FileUploadTest.java, Compiled
Code) 	
at java.awt.Button.processActionEvent(Unknown Source) 	
at java.awt.Button.processEvent(Unknown Source) 	
at java.awt.Component.dispatchEventImpl(Unknown Source) 	
at java.awt.Component.dispatchEvent(Unknown Source) 	
at java.awt.EventQueue.dispatchEvent(Unknown Source) 	
at java.awt.EventDispatchThread.pumpOneEvent(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 	
at java.awt.EventDispatchThread.run(Unknown Source)


I cant understand where I have gone wrong.Please help.


TIA 
Sundari