Is wood paneling paintable?

Yes, but you need to be mindful of the finish. If it’s a gloss it will need a sand

Well you can always paint over your window of you want no light to ruin your walls

Yes, but I never liked the look afterwards.
Wipe it down with a deglosser.before you paint

You can by a special pay like Zinsser that will prime the surface
Be sure to do it right

Yes. I would consider a good primer first.

Just a thought.

Yes but primer firdt

Yep

Thanks ya all. I figure I'll give this a go, and if it doesn't turn out to my liking, maybe tear it all down and replace it with sheetrock.

I dunno. It's not the most aesthetically pleasing.