Note that Arial is not available! Arial is a Microsoft font, designed by Monotype, and a poor imitation of Helvetica. If you are interested, click here for more information. But you can use Helvetica, or any sans-serif font you like the look of, if you can find its font number in IBM's manuals. This can be difficult, since I don't remember the manual to look at! But you can see a list of fonts and their font IDs here, which will help you.
Do some tests, and see what suits you best. But be aware that using a non-monospaced or typographic font in DDS can change the position of other 'normal' output on a page. You may have to fiddle with your DDS to get your stuff to look right.
This was first published in September 2005