FYI, I found a previous discussion on this topic with several solutions:
http://forum.makemusic.com/default.aspx ... 6&g=178849
Also, if you want Finale to play a backward rolled chord on playback, you can follow these instructions:
1. Click the Articulation Tool (the icon with the accented whole note). If you haven’t yet placed the marking in the score, click the chord to be rolled. When the Articulation Selection dialog box appears, click the rolled chord marking and click Edit, and then skip to step 4.
2. Click the rolled chord. A square handle appears at the top and bottom of the marking.
3. Double-click a handle. The Articulation Designer dialog box appears.
4. From the Playback Effect drop-down list, choose Change Attack. Enter 0 as the Top Note Value, and –256 as the Bottom Note Value. The Top Note Value and Bottom Note Value define how the chord is rolled. The units are 1024ths of a quarter note; thus, a negative Bottom Note Value tells Finale to strike the bottom note slightly before the beat during playback. The attacks of any chord notes between the top and bottom notes are scaled proportionally between the Top Note Value and Bottom Note Value, producing a true rolled chord sound. (You may also wish to select Values Are Percentages, which lets you enter percentages into these text boxes; 100% would equal the value of whatever note the marking is attached to.)
If you want the chord rolled from top to bottom, enter the negative number as the Top Note Value, and zero as the Bottom Note Value. (If you enter zero as the Bottom Note Value and a positive Top Note Value, the upper chord notes will be struck late—in other words, the chord roll will begin on the beat.)
5. Press enter twice to exit the dialog boxes.