I am using a 15" screen for my projector (1024x768).
Here are some HD term;

1080P (HD). These are movies with a resolution of 1920x1080.
720P (HD). These are movies with a resolution of 1280x720.
576I(ED). These are movies with a resolution of 720x576, or Pal dvd's.

But I cant find a format for a 15" screen. A movie that uses 1024x768 (or something). Is that the reason why people buy a 17" screen? To have a resolution of 1280x720 (HD) and then download HD720P movies? Another pro for the 17" screen is that the screen is bigger and so is the projecion.

My question is;

"Do you see a difference between a HD720P move and a movie with a lower resolution on a 15" screen?"

Is the HD movie sharper? And better?

//Edit.

Oh yea, to go to the next step, do you see a difference between a 1080P movie and a 720P movie on a 15" screen?

No one has a opionen on this subject?

Is English not your first language?

You're not going to find a movie formatted for 1024. At best, you can run DVD software or get a DVD player that can output the proper VGA resolution. But there's not really a source of movies at that resolution, unless someone took an HD source and reencoded it at such, which would be somewhat unlikely.

With a monitor of that res you're not going to be able to display 720 or 1080, but you can still watch DVDs and do standard computing tasks. It will still look good, but if it were me, I'd spring for the higher resolution monitor. You're doing all sorts of work to begin with, you might as well go all out.

If you have a hdtv pc receiver 720p would look great on a 15" monitor. The trouble is that most monitors do not accept hd resolutions from cable boxes. I had a 15"monitor and changed to a 15.4 wide screen monitor and to me the difference is not that great. The source has more to do with the final result as what monitor you use. just my thoughts.

I totally agree. I bought 2010 and it was horrible. I guess the way it wa re-encoded or something was just terrible. Looked like VHS instead of DVD. And this was on my upconverting Dvd player at 1080p.

Some movies are just not done right and look terrible at any resolution.

Yeah, that's just the way it shakes out. If I remember 2010 was one of the earlier DVDs, may not even be double layer.

As a rule of thumb: if it's in the old fashioned carboard with the plastic clip case, it's probably a piece of shit.

That said a good DVD will look fantastic in any situation. If you want to see a real spectacle on upconversion, get the 4 disk edition of Ben-Hur. It's one of the widest widescreen releases ever. And it's probably the best looking DVD I own.