What is User Account Control (UAC) ?

User Account Control (UAC) is a feature in Windows that can help prevent unauthorized changes to your computer. UAC does this by asking you for permission or an administrator‌ password before performing actions that could potentially affect your computer’s operation or that change settings that affect other users.

UAC is undoubtedly annoying feature in Vista , seeming to pop up even when you try to open vista build in programs.But is does provides robust security solution, something XP and other version lacking.

But for the here and now , you can disable it and loose almost all the extra security strength offered by vista pretty quickly.

The simple way to disable is
1) Go to Windows Run Command  ( winkey+r)
2) Type MSCONFIG and hit Enter
3) Once MSCONFIG window is Open , go to the tools tabs, scroll down to
   “Disable UAC” , Click it and click the launch button. A little command prompt box will open and UAC is disabled.You need to restart the system for the change to take effect.

If you want to make your system as a webserver you need to install IIS. It is included with Windows Vista but is not installed by default. Once it has been installed, it provides for basic Web server functionality and includes the WWW, FTP, NNTP, and SMTP services.

You can install IIS using the following steps:

Open the Programs option by clicking Start | Control Panel | Programs.

Under Programs and Features, click Turn Windows features on or off.

In Windows Features Expand Internet Information Services tree node, you can see that there are a lot of options beneath it. You will probably want to explore these options, because even if you click on IIS, some of the necessary options for doing development aren’t checked.

Once you’ve gone ahead and Checked the IIS items you want, and clicked OK, you’ll see this dialog for a while….

Now when you navigate in your browser to localhost, you’ll see the new default
page.

Once IIS is installed, your computer running Windows Vista will be able to function as a Web server.