How install window firewall??

Kadang-kadang kita ada masalah dgn Window Firewall dimana window firewall rosak apabila ada serangan si VIRUS, SPYWARE, ADWARE n mcm2 lagi..Jadi untuk memulihkan window firewall komputer anda yang sedang diserang itu.Cubalah tip ni..Belum cuba belum tahu...

To install Windows Firewall, follow these steps:
1. Click Start, click Run, type cmd, and then click OK.

2. At the command prompt, type the following command line, and then press ENTER: Rundll32 setupapi,InstallHinfSection Ndi-Steelhead 132 %windir%\inf\netrass.inf

3. Restart Windows,

4. Click Start, click Run, type cmd, and then click OK.

5. At the command prompt, type the following command, and then press ENTER:
Netsh firewall reset

6. Click Start, click Run, type firewall.cpl, and then press ENTER. In the Windows Firewall dialog box, click On (recommended), and then click OK.