By default IPv6 is not enabled on windows XP Pro and Windows Server 2003. However, its very easy to enable IPv6 with netsh (net shell) command line tool.
Enable ipv6
netsh interface ipv6 install
Disable ipv6
netsh interface ipv6 uninstall
To verify if ipv6 is enabled, run ipconfig /all and see if ipv6 address is returned.
Note: you can use netsh to enable/disable ipv4, just change ipv6 to ipv4 in above commands.

To use Blat to send email, you will definitely need to refer to the syntax manual. Below is an example for a normal SMTP server that requires authentication. You can also use IP:Port for -server syntax. By default Blat uses port 25 but if your SMTP server uses a different port, then you can change it.
blat.exe -f from@email.com -to recipient@email.com -subject ThisIsTheSubject -body ThisIsTheBody -server smtp.server.com:25 -u SMTPUserLogin -pw SMTPUserPass
Download

When you install the Windows 7 beta version, you can see some changes in the start menu when compared to Windows Vista. Similar to Vista, the Run command is not available by default in Windows 7. Many people who are still using Windows XP might want to see the run command in the start menu. Run can be enabled in Windows 7 as well like Vista.
1. Right click on any open area in the start menu and select Properties.

2. Select the Start Menu tab in the properties window and click …

obtaining domain registration data from the Windows Command Prompt. The whois command is a standard fixture in the Linux/Unix world, but Windows users typically need to resort to web based applications to query Whois information. We’ll be taking a look at a small utility called WhoisCL, which will allow you to query whois servers from the Command Prompt as well as from within batch files.
WhoisCL, an application developed by Nir Sofer, can be downloaded from here. Once you have downloaded the application, unzip the WhoisCL.exe file and place it in …

If you have a need to restart another computer on a network in Safe Mode via command line or a batch file, you can use the following:
shutdown -r -f -m \\computername -t 30
computername = the computer name of the computer
30 is the number of seconds before it will restart.