[Help] I can't watch video file!!

[samsungstar]

Hi,
excuse for my english, i don't know english very well because i'm italian ;D
I have istalled iDenebd Lite Version on my pc
This is my pc's hardware:
-Genuine Intel CPU 2140 @ 1.60GHz Dualcore
-1,00GB di Ram
-nVidia GeForce 7300 LE 512MB
-RealTek High Definition Audio
-Atheros l2 Fast Ethernet 10/100 Base T-Controller
- Monitor Acer AL1715 17''

I have a problem, i can't watch video file (.avi). I have istalled VLC but i can't watch video file.
Can you help me?

ps= When i click video file, i listen film's audio but i can't watch video