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Can SiN run in windowed-mode on Windows 7 64-bit?
Yes it can, although you may have to set it in options a couple times before it sticks. You may have to change away from 3dfx as well.

I'm running Win7 64-bit with it in windowed-mode.
Post edited January 30, 2014 by CrisisSDK
Any way to set that before running the game?
I went into the game's Video Options and tried to turn off Full Screen mode and set the resolution to 1280x960, but it never works. When I click apply, it just reverts the resolution back to 640x480 and won't go into a window. Is there a way to fix this?

It looks like the nGlide drivers completely override whatever the Sin menu says. I can only get Sin to run full screen and the game uses the resolution that nGlide has preset.
Post edited May 05, 2014 by IronArcturus