Welcome to Gaia! ::

1. What is the size of the symbol?
2. What color are you going for?
3. What is your guitar finish? (I.E. Laminated, wood, painted)
4. Pretty much any spray paint will work, but if you answer these questions I might be able to recommend a certain brand.

I'm the one that's doing the Frankensquire project, but i've just gotten to sidetracked lately with work and money issues to continue further then my latest post.

Well you got lucky because they're laminated.
Pretty much any spray paint will work, but I would probably go with an acrylic based paint. (Here's why)
I.E. This is the way I would do it.
Steps:
1. Cut a stencil out of a piece of paper, and lay it on the guitar. (Printer paper should work fine, don't use notebook paper though)

2. Make sure that the stencil is COMPLETELY flat, and positioned the way you want. Then place masking tape along the edges of the paper, connecting it to the guitar. (It's also VERY important that the part of the guitar being painted is as level to the ground as possible)

3. Now you can use spray paint, but I would use a brush and just buy a can of house paint. (It's usually acrylic based, but check to make sure)
The reason I say this is that you can be more precise with a brush then with a spray paint nozzle, and you're less likely to get what's called "Over spray". (Not to mention you don't have to be 18 to buy house paint)

4. Let this sit for about five or six hours. (This is of coarse excess, but it's better to be patient, then have this come out like crap)
You might as well do one guitar right after the other.

5. You should buy a small bit of clear coat too, to act as a laminant. The people at your hardware store should be able to recommend a good brand for the price you're looking for.

6. Before removing the tape and paper, go over the paint with the clear coat, let sit for directed time on the container (It varies), if it dosn't have a directed time, an hour or so should be more then sufficient. Then add another layer of clear coat. (Six or so should give you a good sheen and protective layering.

7. CAREFULLY take a sharp blade and gently cut along the edge of the tape and paint, but NOT hard or to deep. This will help separate it from the tape. Then gently peel the paper and tape away.

Now mind you i'm NOT a professional, so don't try to hold me responsible for ANYTHING, but hopefully this will at least give you some kind of guide to go by.
I did however take four years of wood shop/furniture and cabinet crafting, and painting a guitar isn't much different then painting any other block of wood.

This will take patience, and I would of coarse suggest getting it professionally done, but if you so choose to partake in this project yourself then I wish you the best of luck.
If you have any questions feel free to ask, and i'll check back to this thread regularly.

BTW, what does the symbol mean? The bottom one appears to be the symbol for the sun, and the one on the right I think is the Zodiac symbol for the Horse.
(I also took two years of japanese, but i'm kind of out of practice)