This is what I use:

:InfoLog
$OS=%OS%
If $OS <> "Windows_NT" $OS = "Windows_9x" Endif
RedirectOutput("$Xdrive\InfoLog.csv")
? "@IPADDRESS0,@WKSTA,$OS,@ADDRESS,@USERID,@DATE,@TIME"
RedirectOutput("")
return

Hope this helps,
Bonk