Linux Poison shows you how to install Flash 8 or Flash CS3 on Ubuntu Linux

Wine is an Open Source implementation of the Windows API on top of X and Unix. Wine provides both a development toolkit for porting Windows sources to Unix and a program loader, allowing many unmodified Windows binaries to run on x86-based Unixes.

Install the latest version of wine:
Ubuntu and Ubuntu derivatives (such as Kubuntu) obtain software from packages which are stored in repositories. Ubuntu's default repository includes Wine, however if you want to stay up to date with the latest Wine package you can use WineHQ's by following these instructions, open up the terminal (Applications > Accessories > Terminal) and type following command to install latest version of wine

  Install Flash 8 or Flash CS3 on Ubuntu Linux