Some good advice here. I'll heartily endorse homerecording.com where you will find a very informed and helpful bunch, for the most part.

My 2 cents for acoustic guitar recording; put one mic about 4 inches away from the 12th fret, and the second about 12 inches from the soundhole. Adjust to taste and blend the two together, should produce at least a workable sound. You probably want to use a High Pass Filter in cubase; start at 100Hz and adjust either way, use your ears. Add reverb to taste, and compression if required (2.5:1 is a good start for ratio).

What are the mics, incidentally? Unless I missed it above, you didn't name them.

Do let us know how you get on!