ORIGINAL: goirish
I normally drill the first holewith a finger drill, unless I have harden the surface with CA, then I use a cordless drill. Once I have the first hole drilled I put the control horn on with the bottom piece also. I then push a T-pin through the other hole and out the bottom plate. Now I have a line to drill the 2nd hole.
The above is exactly what I do.
If your surface is not tapered and you don't have a drill press, then this is another option:
http://www3.towerhobbies.com/cgi-bin...?&I=LXL780&P=7