kuyarog, You should be safe uninstalling it thru your Add/Remove Programs.
If you're not comfortable doing that just locate qttask.exe which should be located in the Programs/QuicKTime folder and rename qttask.exe to qttask.old and you won't be bothered with that icon in the Taskbar anymore.
There's more info under the letter ''Q''--''Qttask
QTTask.exe'' as to disabling it but renaming it is the way I'd go.
I don't know where Quick Time Player came from, but it is becoming a nuisance. Certain sites, I am not sure which, insist on putting the icon in the task bar and I am continually going to msconfig and unchecking the block. It keeps coming back. I went to control panel and started to remove QuickTime Player, but received the command: "Removing QuickTime system extensions can cause applications to malfunction. Uninstalling everything is not recommended." Do I have to live with the Quick Time Player icon in the task bar or can I get rid of it for good? Why does the icon keep reappearing in the task bar and why doesn?t removing the check mark in msconfig permanently prevent it from reappearing?