Welcome to the forum.
Does Matrox offer a driver for the MX02 Mini for PrE?
As for Video Capture via PrE, I think that you will find that your device (camera, deck, etc.) will need to be attached via FireWire (IEEE-1394a).
Adding to what Hunt said... I used to have a Pinnacle DV500 card to digitize/capture from a VCR
That card was activated by Premiere 6 or 6.5 (OLD stuff, not Premiere Pro) by means of a Pinnacle device driver
That Pinnacle device driver was UNIQUE to P6 or P6.5 and would not work in any Premiere Pro version
You need a Matrox device driver that is specific to Premiere Elements... since I very much doubt that a Premiere Pro device driver will work
Does Matrox provide their own software to use their card to capture?