So I've tried looking around as much as I could for any sort of resolution fix for this game, and I can't find anything. I tried looking at the game's exe with a hex editor since that sometimes works for fixing older game's resolutions, but I still couldn't find anything.

There don't appear to be any actual configuration files that deal with the resolution anywhere, so I'm really stumped on what to do. It's kind of annoying that these games are marketed as if they work perfectly on modern PCs, but that isn't necessarily the case.

Press the windows button, type in "regedit" in search and run it, navigate to HKEY_LOCAL_MACHINE -> SOFTWARE -> Wow6432Node -> Red Storm Entertainment -> Tom Clancy's Rainbow Six (start the game once for these entries to appear)

You can change the "VideoResolution" to whichever one you like...

Unfortunately I'm only seeing the ones in the attached image.

There is no VideoResolution entry.

Tested this aswell, I did have the registry key, changed it to 1920x1080 but game still uses 1024x768 resolution.
unable to find anything else on google for this old goodie :(

-Holo-