I just looked up your GFX card it doesn’t appear to have a Video Input … so your limited in this aspect.
Previously I have used TV Tuner cards ( analogue and digital ) which have S-VHS Inputs in conjunction with Vritual Dub.
It records the content in AVI format and I used the HuffyUV codec ( as it was free ) but then decided to purchase the PIC Video MJpeg codec for this which allowed me to reduce the size of the captured content onto my HDD.
With Virtual Dub you can apply various filters to clean up the picture and additional controls ie HSV for fine turning.
Once you have edited the content, you can use pretty much any decent video convertor application to make a DVD.
If you are attempting to use a commercial movie onto your HDD it will be protected by MacroVision, if you use Virtual Dub you shouldn’t have a problem with this.