how can I add a pointer/arrow to a quicktime video in windows quicktime pro?

I am trying to add a arrow symbol to point a player out in a volleyball video. The arrow would appear for a couple seconds above the player. I am using Windows Quicktime Pro.

Not a Windows user, but on a Mac to do this in QT 7 Pro, I would probably create an arrow on a transparent background using an appropriate graphic utility and then save it as an alpha-channel image (e.g., PNG). I would then layer the image over the video. If the player you are trying to point out is in constant motion, you would then either have to create a static sequence in the main video during which you could "point out" the player before resuming full motion playback or you could overlay a separate arrow for each frame of video during which you want the player "pointed out" and adjust the arrow's overlaid location as needed for each frame.

NOTE: This is not something I've ever tried but rather is the workflow I'd attempt in lieu of a video editing app that could do this automatically.