I just wanted to know how I'd go about, say, making a rearing horse statue or a woman praying or something. I'm not looking for anything fancy.

I assume somehow it involves freezing an actor in an animation, but I have no idea whatsoever how to do that. I've already done a search and I'm heading to the CSWiki as we speak. Any help would be magnificent!

Thank you and have a wonderful day!

Well, the Vanilla game uses something along the way of "SetRestrained" and "tai" (Toggle Actor AI) to freeze the actual statue actors. Then there's a membrane shader making them look like stone or marble or whatever. But this is only really necessary when you need some sort of interactivity from your statues, like the player statue in Bruma which will have your appearance and wear your current clothing etc. when constructed.
For real statues without any need to be interactive I'd personally go a different route. The scripted statue approach also comes with some not-so-nice bugs, so a more clean approach is better in my eyes.
I for one would import the actor and its skeleton into Blender, pose the thing like I want (or already import the pose animation I desire along with it), then select every part of the actor and "apply" the armature parent deform. Then you can delete the armature and will be left with a static mesh in a pre-defined pose. You can tweak the textures, even reshape something when you think it needs it (might come in handy to smoothen the features some so it's not that life-like, or reduce the vertex count with some NifTools scripts), add some collision where appropriate (or use existing bounding boxes from other NIFs in NifSkope after export), and eviola, your statue.

Eek, Blender! x_x Alright, thank you for the info!

How would I get the animations in there? Just import a .kf file? I didn't know Blender could do that...

Wow, that's a lot more work than I expected, but thank you! xD I'll try and get crackin' on it.

I've got several made -- http://s212.photobucket.com/albums/cc189/JDFanning_bucket/Armor%20Displays/ - if any of them fit your needs send me a PM and I'll forward the NIf to you. --- Many of them are in my http://www.tesnexus.com/downloads/file.php?id=19058 but some are not (ie. the female in amber armor praying at the sheogorath statue) and the creatures.

Those are pretty cool! I take it the armors are inseperable from the statues, though? Unfortunately that's not what I need. I like your armor shop mod, very nifty stuff in there!

Looks like I'll just have to hit the Blender books. xD

Thanks anyway!

If you mean the statue bases they can be removed easily from the NIf (they are a seperate tristrip) leaving just the posed NPC with the armor. Same goes for the weapons etc. they are holding but the NPC and the armor are a single piece (the pieces of armor could be removed but it would leave an empty space at that part of the body.

You might also want to check out http://tesnexus.com/downloads/file.php?id=2055