Run multiple Skype accounts
If you have Windows XP Pro, you can create and run more than one copy of Skype on your computer.
This lets you switch between accounts, or even chat to yourself.To do this you will need at least one other Windows account
Follow the step's mentioned below
1 Go to Start, Control Panel, User Accounts. Load Skype as normal.
2.Then right-click the Skype shortcut holding the shift key and select Run As
3.Enter the user name and password of the other account and a second version of Skype will load.