After iexplore.exe, just add your html file as a parameter. So to open the page java.sun.com, you would use:
iexplore.exe
http://java.sun.com Using Runtime.exec(), you can put each command line item in an array.
Run[0] = "iexplore.exe";
Run[1] = "http://java.sun.com";
Then call Runtime with the array as a parameter:
Runtime.exec(Run);
HTH
Brian