Hello @GohanCZ and welcome
You're probably gonna have a definitive answer when you plus the camera in the Raspberry Pi. It is a very old camera as far as I can see on Google. So that's a 50/50 chances : either it's a webcam old enough to be sent back to the time where no standard was yet in place in the Camera field; or it could be so old that the driver used by Linux (and so your Raspberry Pi) to control it is veeeery stable... or has been removed because no one use it anymore I've found posts like this one. As you can see, it's a very, very old post (2008). You may be lucky and have nothing to do.
For the other question : most of the time, IR LEDs are not controled by the computer. It's controled by a light sensor on the webcam, as soon as the ambiant light is lower than a certain threshold, the LEDs are turned on. Again, it could be different (I've never had my hands on this model) but I'm pretty confident on that part, more than on the first one
Feel free to keep up posted (and mak this thread as solved ;))