I've just installed a Nebula DigiTV card in my pc and I am very happy with it indeed

The only thing I need some help with is after I have recorded something, the file is massive, around 250-300mb for a music video.

Can someone recommend some software that will let me edit the mpg file so I can take out adverts and so on and also tell me how I can convert it to dixv avi so the file size is smaller. I know I have downloaded music vids that are 80-100mb and still very good quality.

Many thanks.