if u have the install.exe just do this
start > run
type cmd then hit enter
type c:\ and hit enter
then type cd <path to where the install.exe is> hit enter
(so you may type something like cd program files\macromedia\)
then when u get to the folder where the install.exe is type install.exe /x (or wateva the installfile is called)
if your not sure post up the folder path to where your install.exe is and i'll help ya