If you're still looking for the chords, Michael Hurley plays this in the key of C and they're as simple as can be.

C                                          G7       C
I had a dream the other night; I'm Gettin' Ready to Go. etc.

Then:

F                                     C
I'd always heard the place was hot; I asked him if it was or not.

G                                  C   G7               C
He wouldn't say yes or no or what; I'm Gettin' Ready to Go.

Chorus:

C                                                             G
Sweet home; lovin' heaven heaven. Sweet home; hear me moanin' low.

C               
Sweet home; lovin' heaven heaven. Hold the gates wide open;

C          G7       C
I'm Gettin' Ready to Go.