I just picked up my Ibook G3 off of kijiji for a cheap price. I got iCab,Mozilla,and Internet explorer installed and none of them will play Youtube movies or any other type of video. I tryed to install the flash player from adobe but when i get to the installer i get the message "MOUNT IMAGE" "image could not be mounted". The first thing i though of would be to download an uninstaller. So i did that but still no go. My system meets all the requirements but i still dont get it! Can anyone please help me?

Thanks alot!,