DVI to HDMI for hd

I have a 37inch LCD TV with 2 HDMI slots and I would like to hook my pc up to one of the HDMI slots (currently I use the VGA slot). I have read that there are DVI to HDMI cables available and I was wondering if anyone would know if this can up scale my pc to high def quality, as I have backed up most of my dvd collection and stored them on an external hard drive to condense space.

They are mainly in AVI, OGM & MKV format, and I currently watch them using GOM Player. Does anyone know if it would up scale these as well???

Any help would be much appreciated.

 

I have only done some basic research.

Unless you have a HDMI output the television will only use the connected (DVI or VGA) input.
http://en.wikipedia.org/wiki/HDMI
[HDMI can handle both high definition graphics and audio, DVI and VGA are graphics standards.]

The quality of playing the files will depend on the way the recordings were made. The table here may give you some leads:
http://en.wikipedia.org/wiki/Sample_rate
If you have used default settings in your recorder, check if they are at a HD level.

Matt