Pinnacle PCTV error

My OS is win XP, I have to reinstall it in my PC a few week ago, therefore I have to reinstall the Tv card, but every time I try open it this windows error message appears in my screen:

PCTV vision: hardware not found or in use

The PCTV device is already in
use or not connected. Please
connect the hardware and try again.

If another application is open that uses
PCTV (Studio, PCTV Radio or PCTV
Twain driver), please close it first.

I hope this info helps to solve the problem, thanks.