Powerbuilder support is being added in QTP 9.5, which is currently being release to the general public--contact your HP sales rep. Prior to this new release you needed to use WinRunner to automate powerebuilder apps (but I am not sure if the latest WR supports PB 11). Anyway, here is HP promo material that mentions support for PB 11 in QTP 9.5:
with PB being support , this bring back the old debate . Will HP stop supporting WR and have only QTP as the main functional testing tool?
I guess PB support was the main advantage of using WR over QTP
"I realize it's an error, but no one is going to try to do that!"
From "Top 10 Stupid Comments from Developers".