That cannot be done.
If you use the unlock option you will still have a narrow blue line at the bottom. But the taskbar basically would be hidden. If you use the autohide option the taskbar will hide completely automatically. But when you move the cursor at the place where the taskbar suppose to be the taskbar will pop up.
Right click on the start button. Select properties, click the taskbar tab, then put a checkmark in the box, where it says "auto hide the taskbar" Now click apply then ok..Good Luck..
Right click on your windows taskbar, go to properties, under the taskbar properties you will get the taskbar appearance pane in which you check the Auto hide the taskbar option and your taskbar will get disappear.... whenever you need it just hover you mouse to the bottom of your desktop it will reappear....
Taskbar and Start Menu
It's impossible, it's not gonna be possible to make a virus that can paralyze a system forever by using something as simple as a batch file. Even so, the only way to disable the taskbar is to disable explorer.exe, which even if you managed to disable, the user can easily start task manager with the Ctrl + Alt + Del combination, disable your virus that is running, and then start explorer.exe to restore the taskbar. So it's impossible to do.
Right click the taskbar, click properties, uncheck auto-hide.
It enters and exits Full Screen Mode, which on Windows will hide the address bar, tool bars, and taskbar.
right click over the taskbar, click on properties and then in the option that say auto hide task bar
When you want to run the fullscreen program you can autohide the taskbar. Do this by right clicking on the start menu button and click properties. Then go to the taskbar tab. Then check the box that says autohide taskbar. Then click ok. The taskbar should hide after a few seconds. To bring it back hover over the bottom of the screen.
Google taskbar is one of the newest features from google. Using taskbar, you can keep yourself organized, as well as getting a bit adventurous. Google Taskbar allows you to make tasks, and remind you about them, so you never forget anything!
Right click on taskbar, the click on "Lock the taskbar".
Hit the Start key (the Windows icon). On the bottom type 'taskbar' and click on 'taskbar and start menu'. Then just make sure the appropriate boxes are checked. Then click 'apply' and 'OK'. Make sure you don't 'auto hide'. These instructions are for Vista.