are you able to log into any other accounts or is this the only account on the netbook
Press F8 on boot and select the Safe mode, this will enable the Administrator account on the logon screen, of course for safe mode.
Turn the pc off and turn it back on and continuously hit the f8 key until you get to the advanced boot options menu and select safe mode
Select administrator it may or may not be password XXXXX let me know if you can log in
Once logged in go to start
Select Control Panel
Go to User accounts
Select your user account and click remove password.
Let me know if this helps
Ok it seems the administrator password XXXXX changed. are only option is to boot into the recovery partition and restore the computer to its factory defaults which will wipe your computer to the way it was when you bought it. IS there any data on it that you need?
To enter the recovery partition. power down your laptop and restart it and immediately after restarting it hit the ALT F10 keys continuously until you boot into the recovery partition. from here you can restore the netbook.
Let me know if you need anything else.