Check out DITA tools – 3 (Transforming) by noreply@blogger.com (Anindita Basu). Here is an excerpt:
To transform dita files to a publishable output, such as XHTML or PDF, we need to run ANT builds, and we do it through the DOS command line. Another option is to use a GUI. I find the WinAntEchidna GUI, developed by HyperText, to be very handy.
The first time that you use WinAntEchidna, it asks…
The full article is available here.