Originally Posted by: magicninjaWell If your in the Key of G any G major Scales will work. As will most scales with the note G. You also have relative scales. In G major the relative minor would be I believe Em. To find the relative minor just go three frets down from the root note in the major scale. Theory isn't really my strong point but I know enough to get by.

The above is absolutely right - but I'm a little confused about you question "Does anybody know what the chord formations are in the other scales or is there a logical way to work them out." The chord formations stay pretty much the same in any key, in that a minor key chord structure is much the same as the major. If you understand how a minor key is formed it's just a matter of placing the relevant chords in the I, II, III, IV, etc. positions.

For example, in Dm the notes go "D, E, F, G, A, Bb, C", where the I, III, and V are minors, but the rest are either Major's or Dominant chords...The same princible can be applied to most other scales, although there is a little more theory behind them - perhaps you should check out some of the lessons on GT to get a better understanding?...