Can any guitar experts help me figure out the tuning for "Into the mystic" by Colin James.?

I cannot find any tab for this to save my life! Yes there is one (and only one) on ultimate-guitar.com but this is not the tab I'm looking for.

Can anyone out there help me with the tuning and tabs? I really would love to know how to play this song but I can't figure it out. Thanks to any who can help!! And again I'm not looking for Van Morrison, the way he and Colin James play into the mystic are completely different. The only chords I found don't mention what type of tuning is used, thus the chords displayed may be correct but are incorrect when playing with standard tuning.

http://tabs.ultimate-guitar.com/c/colin_james/into... - This is the ultimate-guitar link to Colin James version of into the mystic, but without the correct tuning, I don't know if the chords are right. I do know that the E chord is correct. Thanks again!