Very easy actually, as it was very slow on my favorite websites like Break, Ebaums, and Netflix. Simply install Adobe Flash 10. Online flash videos play much more smoothly, and Netflix movies run at 90-100% full speed. Usually shutting down and starting up will free up some memory and processing to dedicate directly to Netflix video. Silverlight can be installed on a Dell Mini even though it gives the processor error, just view package contents on the Silverlight Installer, and delete the Installation check file.
So, rather than running 3 frames per second, most video will run pretty well.