Someone know how to remove quicktime 7 for windows

[RyutheSlayer]

I get some trouble to remove the program quictime 7 for windows cause i
try to desinstal the application but i said the follow message :
quicktime error : -3

i try to desinstall on the add/remove program and on quicktime
desinstaller nothing work

i try either to reinstall quicktime on quicktime but the error of some
key on the registry missing this time

anyone cant help me is very apreciate...