Help Please! Acouistic Treatment for Brighton Recording Studio

I'm recording a 12-string acoustic guitar into a Shure KSM44 mic and into a Universal Audio SOLO/610 preamp into an Apogee Duet into my MacBook Pro running Logic Pro 8. The recording is very thin/tinny.

i have an acoustic electric guitar.. B-Band UST pickup (under the saddle). .and it goes thru an ibanez preamp to the jack of the guitar.
When i plug a cable into it.. the sound is very low. Even when volume is all the way up on the guitar, and on an amp. The noise gets real loud..but the sound of the guitar is very weak. Any suggestions?

My goal is to record acoustic guitar and vocals at the best quality and then if i want to add some drum tracks i can just go to a commerical studio and add on to it after. Then once it's done i can get it sent for mastering. That would save a lot of money in the longrun.

I have tried using a Shure SM57 with my Firebox but the results are not that good, in fact, I think I get more of the sound I want from my Radioshack mic. I'm using a nylon string guitar and I'm trying to get as much tone from it as possible. It is a very loud guitar to play and I'm trying to preserve that loudness for the track.

Any ideas are welcome, thank you

So, I've been elected without any say to lead the music for a new Saturday night worship service at my local fellowship, and it looks like I'll at least be starting by myself, maybe with a singer or two if I'm fortunate. Which means... I'll need an acoustic guitar. :? So much for swearing I'd never buy an acoustic guitar when I was an angry teenager.

Ok,

Here is the link to the song,

SoundClick artist: MrJulius - page with MP3 music downloads

The vocals in the beginning are only for reference.

I have gotten the lead and vocals sounding great (IMHO) but the rhythm guitar just isn't clear.

I want those clear treble highs. Is there anything I can do EQ wise to bring them out more?

I'm having some problems recording my bass guitar.

It's one of these:http://www.guitar.co.uk/acoustic_bass_guitar/1688-aeb8e_electro_acoustic_bass_guitar

These are my new favorite acoustic guitar mics. Very natural sounding and they came in a cedar box for only $560 for 2 of them. My guitar sounds better than ever before. Anyone else tried them? Any tried them on other instruments?

I record a lot of acoustic guitar in my home studio. I currently switch between an AT4040 and an SM57. The 57 sounds, well, like a 57 - a bit chunky for guitar. The AT4040 has a slight kick in the low mids that make my guitar and mandolin sound a bit boxy. I usually have to EQ it out. So, I'm looking for an additional mic for acoustic guitar/mandolin/fiddle micing.