Finiding MAC Address

 Every computer in this world has unique address called   MAC(Media Access Control) address.This is also called physical
address or LAN address or NIC address or Ethernet address or
Hardware address or node address.It contains 48 bits.

1)Click on the Start Menu .
2)Click on 'Run'.
3)Type 'cmd' without quotes and press Enter.
4) At the command prompt, type 'ipconfig /all' without quotes. (space between g and /)
5)Alternatively, if using Windows XP, you can use the command 'getmac'.
6)Your MAC Address is listed under 'Physical Address' as a series of 6 groups of two digits, letters and numbers, separated by dashes, such as in the image below. 
(Make sure you get the physical address of the correct network adapter - usually there are several listed.)

Finding MAC Address For Linux:

Instructions: 

     1.Click the GNOME menu "Applications" and "Accessories.".

     2.Click "Terminal" to open a command prompt window (terminal) in Linux.

     3. In RedHat, Fedora Linux; type "/sbin/ipconfig" and press "Enter." 

     4.In Ubuntu, Debian Linux; type "ifconfig" and press "Enter."

     5.  Look for the line in the program output that contains the string "HWaddr=" followed by characters. 
          Those characters are MAC address. For example, "HWAaddr=02:1D:A8:8C:B6:86."

How to set home page in Mozilla Firefox

1.Open the Fire fox if you haven't already.
2.Click on TOOLS  on menu bar  at the top of  the fire fox  screen and
     click on options  as shown below.
                                

 3.After clicking options you will see Options Dialogue Box as shown below in fig1.2 and fig1.3 depending on the version of fire fox.                              
                            

    4. Type the address of the web page  to use as your home page           into the box provided(see fig1.2 and fig1.3) and click OK button.                 
     5.If it is the web page you are currently viewing, click                           use current page and OK button.
     6.In fire fox we can also use one of the bookmark pages as home

        page.