[jitter] [ot] usb/fw video card

Hello,

i need to squeeze as many outputs from mini mac as possible,
i`d appreciate any advices on following:
1. is there any way for smthg like this: http://www.trittontechnologies.com/products/TRIUV100.htm
to work under os x?
2. is there any cheaper way for firewire output than two way capture card ( like this: http://www.canopus.com/products/ADVC110/index.php )?
3. can anybody confirm that triplehead2go doesn`t really work on mini macs:
http://matrox.com/graphics/en/gxm/support/th2go/compatibility.php#mac
4. any other ideas for external video cards/solutions would be much appreciated,

thanks,
ms