Welcome to GOG :)
Yes, you can download your game's installer and put it on a flash drive, so you can install later when you have a better computer.
You can read a little review about your graphic card here:
http://www.notebookcheck.net/Intel-HD-Graphics-4000.69168.0.html

And the games I recomend you are the Witcher series. I think you shouldn't have problems starting by the first one.
http://www.gog.com/game/the_witcher

If you like RPG's you'll find great games here, also good ones for your actual computer. Enjoy :)

the witcher isnt going to run on a intel hd 4000

Oh really? Then sorry :(

Well, if the reason for not adding Win8 as the supported OS is because they saw some issues on some Win8 configurations, I can fully understand if they don't refund in those cases.

well it wil "run" but it wil look like a ps 1 game run through a slide show

It runs, but (depending what kind of Intel HD 4000 PC), quite slowly. I can run both Witcher 1-2 on my HP laptop (with Intel graphics), but especially the latter I have to put to the lowest detail settings and pretty low resolution, to get any kind playable speed.

So, they can run, but quite poorly. They ran much better on another cheap non-gaming HP laptop (medium settings or so), apparently just because it had some low-end NVidia graphics.

Well there is the sale. GO GO GO.

I must be God or something, right? My advice was spot on :P And you, get that bundle right now! (If you want them, this is the best deal on them)