Well, quite self-explanationary title, isn´t it? Anyways, some extra info:
-with ini-Editing, you can reach 2048x1536. Afterwards, game starts crashing.
-16:9-support is crap interface-wise, but if you really love these games, you probably don´t need the interface anymore anyways.
-the demos are still online (and contain different levels then the games, worth a look!), so everybody with a UHD/4K-Screen/ TV can try to contribute
-I´ve got a gift key for RaceDriverGrid, which isn´t availible on the store anymore, for whoever solves the problem.(or to a user of that users choice, of course)

Edit: Oh, and vote on the wishlist to get them here:
https://www.gog.com/wishlist/games/harry_potter_and_the_sorcerers_stone
https://www.gog.com/wishlist/games/harry_potter_and_the_chamber_of_secrets

Edit2:
There are pages on WSGF for both and there are several fixes for UnrealEngine I in the world---but they´d have to be adapted.
http://www.wsgf.org/dr/harry-potter-and-sorcerors-stone
http://www.wsgf.org/dr/harry-potter-and-chamber-secrets

Hello, anybody?

Well, what did you expect, it's a very specific question..

You need to cast modulates enabilis.

What does moddb or nexus say?

Don't know myself as can't stand hp and plagiariser of worlds.

Jup, but there should be some experts on these topic in general around, who love downloading demos and try to hack into the games. Personally, my expertise ends at driver-tweaks, ini-tweaks and the usage of hex editors (only the use of them, not how to find the right lines to replace)

And in the past even if nobody got an answer, such threads tended to get filled with appretiation for the question or the games. On top of that, a giveaway of a gone GOGgame. So no, I didn´t expect three hours of silence. Not on GOG. Ah, well, should have included that in the OP: There are pages on WSGF for both and there are several fixes for UnrealEngine I in the world---but they´d have to be adapted.
http://www.wsgf.org/dr/harry-potter-and-sorcerors-stone
http://www.wsgf.org/dr/harry-potter-and-chamber-secrets

I´ll extend them when a fix is found.

You must also consider that those HP games aren't exactly classics or masterpieces.
Btw, have there been really many modders here on Gog?

That´s only true for part one, which was very clunky. And of course for the later games, Part three is simplyfied as hell and the ones afterwards are completly different games in general.

But, Part two. ChamberOfSecrets is broadly considered a masterpiece of the 3d-Jump n´ Run-Genre that got praised into eternity for astonishing map design, superb controls and a clever collectible system.

Regarding the modders:
In subforums many have shown up---I guess they are watching the general forums as well.

To stress it once again: Main challenge is to find out which UnrealEngine I-mod can be adapted so it can run with these two games. Should be a challenge a more experienced user then myself could get over with...

dgVoodoo2

How would this glide wrapper be able to bypass the engine´s resolution limitations?

Wohooohh, it works! Thanks a lot. Shall I send you the key for Race Driver: Grid or do you wanna pass it to somebody else?

I was going to say, for old games not on GOG you might try asking on VOGONS.

Sure. Send it to me.

Well, there you go.

BTW, does somebody know if there is any way to tune the HUD of UE1-Games like HP? If you look at the 16:9-Screenshots at WSGF you know why I´m talking about it... :D