Please, please, please, please GOG. Add something magical to allow us to run the GOGs you're releasing in a window. Having to run these games in a virtual machine at 800x600/1024x768 is such a horribly round-about way of doing it. I'm currently sitting at the other side of the room every time I want to play Might and Magic 6, just because playing it fullscreen at 2560x1440 is painful up-close.

Any of the games that are run through DOSBox or ScummVM can already be run in a window, you just need to configure that. Other than that, if a game doesn't offer an option to enable windowed mode or a config file that can be altered to enable it, you're out of luck.

I don't see a way of doing it without modifying the game extensively... While I personally think that's a ridiculous overkill resolution for a monitor, does it not have the option to turn off scaling? It seems the reason you want the game in a window is because you'd like it smaller and turning off monitor scaling would certainly achieve that.

Ah, well pointed out. That resolves the issue for games at least with DOXBox. However, I'll still suffer with games like Baldur's Gate 2. That's a shame :( I'm not sure about monitor scaling - I'll look into it. I presume that instead just displays the image at the resolution intended, and black-edges the rest of it?

Just install the Baldur's Gate 2 widescreen mod, then its a non-issue: http://www.gibberlings3.net/widescreen/. Not every game is going to have that kind of thing available, but many will and most of them are clearly listed in the individual game forums here.

Scaling depends on how you configure it. If you do fixed aspect ratio scaling, then it will present the game in its original aspect ratio with black bars on either side of it (usually called "pillar boxed"). If you set up original size/no scaling then it will present it in its original resolution, surrounded by black, however, when you are talking about an older game that probably runs at 640X480, then you are going to be squinting at a tiny 640X480 section of pixels in the middle of your 2560X1440 screen.

To be honest, I'd rather be looking at a 640x480 box than seeing graphics stretched across my screen! Thanks for the link to the widescreen mod, I'll check that out.

You'd probably actually prefer the fixed aspect ratio scaling. That still present the game in its original aspect ratio (no stretching) and still fills the screen vertically but not horizontally.

Baldur's Gate 2 - like all other Infinity Engine games - can be easily switched by pressing alt-return at any time, and will stay in the last active mode (full-screen or windowed) when you quit and restart the game. There's also a setting accessible from within the game to do the same.