Originally Posted by: Itsmesilly
open-1 - 3
open 2-3
open 2-3
open 2
open 1-3
open 1-3
[/quote]
If this is what you are playing:

E |-------------------------------0-1-3-|
B |-------------------------0-1-3-------|
G |--------------------0-2--------------|
D |-------------0-2-3-------------------|
A |-------0-2-3-------------------------|
E |-0-1-3-------------------------------|

Then you are playing these notes:

E - F - G - A - B - C - D, etc.

Essentially all the natural notes without accidentals (sharps or flats). Therefore it is a C major scale. But you would be starting it on it's 3rd scale degree (E):

C - D - E - F - G - A - B - C
[QUOTE=Itsmesilly]
... is that an E major because it starts on the open E?

No. The interval relationships (distances between the notes) determine what scale any given group of notes forms. You can start playing a scale on any one of it's notes, doesn't have to the root note.

Look at the Guitar Fundamentals 2 course for lessons on intervals and scales.

Hope this helps!