The Wildcat 5110 should have a 2D engine. there a few versions of the Wildcat II, I have 3 on the shelf now that were pulled from the Zx10's. I even have an extra geometry engine option. Check your card for a "cirrus logic" chip. thats your 2D processor. I know "YUCK!" but thats the 2D you get with that 3D card for a mere 2 grand or more. The Wildcat is a high end OenGL card.
Radeon 8500 has problems with openGL currently. This is not a good choice for what your doing at this time. The drivers need to mature quite a bit for this application.
Check out the Quadro DDC, this is what we are currently <A HREF="
http://www.sgi.com/visualization/graphics_cluster/tech_..." target="_new">shipping with most models</A> for OpenGL and video editing.
The Quadro2MX is a low end OpenGL card, very low end.
We no longer ship wildcats, too often these cards were being pulled and replaced with cards that had better 2D engine.