This is mainly for sites such as
http://mobile.blackberry.com that uses Plazmic. (Try it out! It's animated, like Flash!)
You should upgrade to OS 4.0 on your BlackBerry anyway since BlackBerry 3.8 is simply an early beta version of 4.0 .... (OS 3.8 is slower than both OS 3.7 and OS 4.0)