which mac, which graphiccard for multiscreen

[kah]

hi there,

i got no real success setting up a perfect multi(two-)screen with my old G5 and a ATI 9600XT-card.
everything worked, except the soft-edge-feature. i guess the card doesns provide this "pixelshader II"-ability, so no change happened while moving the softedge-sliders.

what to do now, any suggestions?


thanks in advance
k.