Trouble installing Flash cs3 from design prem

Hello,
I can't install Flash CS3 on my PowerBookG4 (OS 10.4.11) even though all other CS3 apps installed. (Briefly I had Flash CS4 installed but couldn't get a lic# that worked, so uninstalled that.) Installer says it's already installed but it doesn't show up in apps folder, in search, nowhere. Tried uninstall, but it doesn't find it anywhere. It's either there or not, but installer wants it both ways. Tried uninstalling Flash player, but no change.