I have found out the answer for myself. It goes like this:

In the applet create an instance of the frame like this:

Frame myframe;

myframe = (Frame) Class.forName("frameclassname").newInstance();
myframe.postEvent(new Event(myframe,-1,this);
.....
and in the frame's handleEvent method
we have
if(e.id==-1 && e.target==this)
init((applet)e.arg);

where
init(applet xx)
{
this.xx = xx;
}

now in the actionPerformed method of frame
we say:
if(....)
{
xx.getAppletContext().showDocument(url,"_blank");

thats it!
It works just magic!!!
Vishwanath

Inside the actionPerformed() method Use Runtime and Process classes to achieve the desired result.



public void actionPerformed(ActionEvent ae)
{

Runtime rt=Runtime.getRuntime();

Process pr=rt.exec("iexplore.exe www.jguru.com");

pr.waitFor();


}


That should do it or you could also use JNI to communicate with the native code.