Hi Jeames!
I've been thinking of doing a guide for my self on barre chord palcements on the neck. I did one for you now, that I of course will be using myself (thanks for kicking my but to get it done <img src="images/smiley_icons/icon_lol.gif" border=0 alt="Laughing"> ).
I have uploded a .JPG that is an explanation that I hope will help you (and others intrested). I will post a second reply with the word document if anyone is interested in developing it further.
Some say you don't need the theory, and maybe it's so, but this is music theory and I think it helps a lot, don't you.
Another tip (theory of course...): If you learn the full note scale (a,a#,b,c,c#,d,d#,e,f,f#,g,g#) you can name ANY note on ANY fret on ANY string of your loved instrument.
Just take the root of the string (e,b,g,d,a,E) and place the scale right on that note. When you pass the g# in the scale just restart on the a note.
Exaple: On the b-string a loose string of course is a b. If you place your finger on the first fret you move one step up the scale. This gives you a c note. Second fret same string gives you a c# (next in the scale).
Theory or not, this have made my life simpler...
/Missen