(36) Disable automatic activation
When we try to activate Windows over the Internet, whether the computer activated successfully or was unable to activate for some reason. Activation failures are usually due to network connectivity. If activation was not successful, the computer will attempt to retry automatically every 2 hours by default. The user does not need to be a single click for automatic activation attempts to continue.

Automatic Activation can be disabled using this registry setting.
Open Regisrty Editor and Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SL\Activation
Create or modify a DWORD value named as Manual and set the value data to 1

(37) Configure amount of space (In percentage) used by System Restore
Open Registry Editor and navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\cfg
Modify DWORD value named DiskPercent and set the value data from the default setting of 15 to a number you find more reasonable. This percentage applies to all monitored drives and cannot be configured individually.

Run this command to check used space by system restore.
Vssadmin list shadowstorage

(38)  Command Line Parameters for Windows Media Player (wmplayer.exe)
Windows Media Player supports a set of command line parameters that specify how the Player behaves when it starts.
Here are some useful commandline parameters and their description.
/Task NowPlaying          Open the Player in the Now Playing tab
/Task MediaGuide          Open the Player in the Online store tab
/Task CDAudio              Open the Player in the Rip tab
/Task CDWrite               Open the Player in the Burn tab
/Task Library                 Open the Player in the Library tab
/Task SkinViewer          Open the Player in the Skin Chooser mode
/Task PortableDevice     Open the Player in the Sync tab

(39) Fix and startup problems in Windows Vista in Windows Recovery Environment (bootrec.exe)
To use Bootrec.exe tool, you have to start the Windows RE. Follow these step to perform desired troubleshooting.
1) Boot with Windows Vista DVD
2) Select a language, a time, a currency, a keyboard or an input method, and then click Next.
3) Click Repair your computer.
4) Click the operating system that you want to repair, and then click Next.
5) In the System Recovery Options dialog box, click Command Prompt.
6) Type Bootrec.exe, and use appropiate option and press enter.

Bootrec.exe supports following options:

/FixMbr -- writes the master boot record of the system partition using the master boot record compatible with Windows Vista.  This operation does not overwrite the existing partition table.

/FixBoot -- write a new boot sector onto the system partition using the boot sector compatible with Windows Vista.

/ScanOs -- scan all disks for installations compatible with Windows Vista and display the entries that are currently not in the boot configuration store.

/RebuildBcd -- scan all disks for installations compatible with Windows Vista and allow the user to choose which to add to the boot configuration store.

(40) Customize System Restore intervals
Normally, System Restore automatically creates restore points every 24 hours. To adjust this interval, follow these steps:
1) Open registry editor and navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore
2) Change the value RPGlobalInterval from its default setting of 86,400 seconds (24 hours) to desired value in seconds. just half, to 43,200, if you want to save restore two times in 24 hours OR triple it, to 259,200, if you want restore points created every three days.
3) Restart Windows to take effect.