1 - Open the Start menu. click the Windows logo in the bottom-left corner of the screen or press the ⊞ Win key.

2 - Click Control Panel. You'll likely find this option on the right side of the Start window, though you may first need to click All Programs.

3 - Click Security. This option resembles a multicolored shield; it's on the left side of the window. 

4 - Click Windows Firewall. It's in the top-left corner of the page.

- Click the "Turn Windows Firewall on or off" link. You'll see this option in the top-left corner of the page.

6 - Click the "Off (not recommended)" box. It's toward the bottom of the page. 

7Click OK. This will disable your Windows Vista computer's firewall.