Here's how can view and work on your own desktop from any corner of the world.
The first thing you should know is the ip-address of your PC.Then the user and password of the account of the PC you want to access.
IP Address can be found out by going into StartMenu->Run
Type cmd
Then type ipconfig
Now Goto My Computer Properties->Remote(Tab)->Check both the check boxes given there->Apply->Ok
Goto Start Menu->All Programs->Accesories->Communication->Remote Desktop Connection
Enter the computer as the IP-ADDRESS,username of the PC and password.
Then Click Connect.
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Tips:
If you want to connect to your PC with only a username and with no password.
Then
Goto StartMenu->Control Panel->Administrative Tools-> Local Security Policy->Local Policies->Security Option->Accounts:Limit local account use of blank passwords to console logon only->Disabled
Now connect Remote Desktop without password.
You are done with it............Enjoy