ERROR: Zinc was unable to initialize the graphics interface

Hi all,

Been looking into Zinc.tv, got it working at work, and tried installing at home on my old PC turned HTPC. At work, it works beautifully. At home, I get the subject error.

Work PC:
Intel Pentium 4 2.1 Ghz
EVGA Nvidia GeForce FX 5700LE 128bit 256MB DDR AGP

Home HTPC:
AMD Athalon XP 2600+
Visiontek ATI Radeon x1650 Pro 128bit 512MB DDR2 AGP

According the specs of both video cards, the ATI should outperform the Nvidia as it has a faster core clock, better OpenGL support, etc. Just wondering if anyone else had an issue with ATI Radeon x1xxx cards or is it just me? I've tried the newest drivers from Visiontek as well as the newer legacy drivers direct from ATI, but still get the same issue.

Any suggestions would be appreciated, including debugging instructions. Thanks for a great media solution!