PlayOn won't Uninstall

A while back, my sister installed the trial version of a PC-to-Wii video player called "PlayOn" on our desktop computer.
It was a handy little application, and although it ate up the CPU while running (live streaming of video to Wii = processing stress), we no longer needed it once we ordered the Netflix disk for Wii.

I should have unistalled PlayOn the day we got Netflix, but I didn't. So, naturally, the trial expired. However, the program remains AND starts up upon booting into Vista. It notifies us that there is an update for playon. I right-click and choose exit. It opens up my browser to an update page. Or, if I don't click exit right away, the notification bubble disappears but the PlayOn icon remains in the taskbar.

I can click exit, but there is no way to prevent this program from starting up at login. I've tried Control Panel>Change Startup Programs, but PlayOn doesn't exist in any list, not even as an N/A from an unknown publisher. I've also tried Control Panel>Uninstall a Program, but it doesn't show up in this list either.

I use Vista SP2 and my account is an administrator account. We also have multiple accounts on the computer, if that's applicable.
Please help me either stop from starting at startup or uninstall this application!

Edited by TechlessOS_3211, 21 September 2010 - 09:40 PM.

Try this.




http://www.revouninstaller.com/

If you do try revo uninstaller:


For best results, use Advanced. If successful, and asked for a reboot, say no.

Then click Next to begin looking for leftover items. Check only the bold entries.

To make sure you get everything, if any entries-usually the last thing listed and not in bold-have a + sign click on the + until you see more bolded items. Check those items to delete. Click next and let it find files you can safely delete.

If a reboot was required, do so after deleting files and folders.