Tony, I don't know anything about computers to be able to help when things go wrong.
All I know is when I installed mine (I use EZcap, not easycap), it works straight up.
But you could go here and see all the solutions to easycap problems:
http://forum.easycap.co.uk/index.php...95d4&board=2.0
It's a whole Forum dedicated to just easycap.
I have also, just today, plugged my EZcap into another PC that has never had an Easycap in it, and it didn't even want a Driver. It just worked. Has XP Home on it.