How can I get a guest's MAC address from an applet

I want to get the guest's net adapter MAC address when the guest visit my page.Can I use an applet to do this?
[118 byte] By [Johnnylee78a] at [2007-10-2 2:12:38]
# 1
Verry verry hard to do I think: http://forum.java.sun.com/thread.jspa?threadID=245711
harmmeijera at 2007-7-15 19:53:27 > top of Java-index,Security,Signed Applets...
# 2
Could anybody give me some advices to solve this problem?Whicn technology shoud I use in Java?
Johnnylee78a at 2007-7-15 19:53:27 > top of Java-index,Security,Signed Applets...