Using environmental variables in Windows.
Start->Run->cmd.exe
echo "hello %username% at %computername% this is your %processor_identifier% speaking. I detected some pr0n in %userprofile%. Please remove it."
"hello fnord at THETA this is your x86 Family 6 Model 8 Stepping 1, AuthenticAMD speaking. I detected some pr0n in C:\Dokumente und Einstellungen\fnord. Please remove it."
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C:\>E:
E:\>%homedrive%
C:\>
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C:\>cd %userprofile%
C:\Dokumente und Einstellungen\fnord>
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C:\cd %tmp%
C:\DOKUME~1\fnord\LOKALE~1\Temp>
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E:\>%systemdrive% cd %systemroot%
C:\WINDOWS>
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Use these when scripting and also when telling people on IRC where to go in Windows. Avoids all the trouble with different partition names and localization.
To get a list of all environmental variables type "set" in cmd.exe (just like in Linux).