Help: CS3 Blending Techniques

I think I'm using the right terminology here. I have 3 shots of the same composition of books in a library (underexposed, overexposed, and correctly exposed). My goal is to give it a dark/dungeony/eery feeling. My question is: How do I go about mixing these together (if I even need to) to accomplish this feeling? My PS skills aren't that great, but I'm trying to improve on them. The photos were shot in RAW and I haven't done anything with them yet. Could someone give me a step by step, or point me to a website that will?

HDR tutorial using PS
I also moved this thread to the HDR subforum; you'll probably get more responses there...

Photoshop has "merge to HDR" which should work:

http://www.talkingtree​.com …11/how-to-make-hdr-images

Is HDR the right process I'm looking for though?

Yes it is.

Thanks guys. I'll give it a go, and see what I can come up with and then head back this way for some C&C