Try using cam-viewer.com. I've been using it on my webOS Pre2. Since it's designed for iOS, it should work well for you!
I can view some frames, but have no PTZ control. Logging into the cam via my web browser results in the same thing - since the camera needs to use an Active-X control in a browser, you won't get video if not using IE. I do however gain camera control, so I can move the cam on one browser card, and view the results in another card. Easy to do with webOS, but I'd really like to see a native Dlink app written for webOS!
WyreNut
Moderator, HPalm Support Community