some cool cool tricks :

1.open cmd and type :
   netstat: it will give you all the adresses of computers
   which are linked to your pc

2. tracert sitename.com it will give you the ip-adress of the site.

3. shutdown -i  it will open a gui and you can shutdown a remote computer.

4.to access the remote desktop :
   open run and type mstsc
   now enter the ip of the desktop
   confirm by entering the user-name and password.

5.to access the folders on a computer which is on our network:
   \\ip-adress   <

6. to see the dns name and all the ipadresses of the site, type in command promt:
    nslookup sitename.com

7. if your site is not opening even if you know that you are typing the site name correctly
  then use the command promt in elevated mode (administrative privelage)and type:
  ipconfig /flushdns


8. to see the dns cache, type:
    ipconfig /displaydns in command promt.

9. type msconfig in run for boot and startup related problems(ex. removing any application from startup).

10.type msinfo32 to gather more info about your computer.

11.type systeminfo to check yet more info about your computer, you can even see when u have installed ur windows and how much time u have spended on it watching movies and playing games lol..
have fun