Animating a brush with live data?

Hi all.

This is my first post and I´ll think i´ve come to the right plave to get some answers.
I´m relative new to blend and silverlight but i´m used to flash and other programming.

My problem is that i have this live data coming in from a system that changes over time (every 1-2 sec in fact) and i wanna build som own controllers that respond to data changes according to values.

Like how do I change the height of a brush 0-100 or like any animation that could update to live data change.

I haven´t figured out the right approach to do this with either just animation och combining animation with some behaviors.

Any help would be most appr.

reg: Mandelmassa =)