Marvelg400tv +W2K +Nforce2 problems

[stargate26]

Hi, when I run Matrox PC-VCR, my SWHS Jvc cam dont display , I choose : imput S-imput, but no video no matter of what , it doesn't work, it was working before, I unistalled Power-tools & reinstalled NO WAY, I unistalled Matrox display drivers & reinstalled NO WAY , what can I do? PLS. HELP
Thx 4 your time
Stargate26

Ps. could it be Matrox Vidcap? if so where can I found/download it?