This is a great song. i don't get why there aren't already loads of tabs for it so here
one of what i hope will be many.
                 C (x32010@1)   D7 (xx0212@1)              GWelcome (320003@1)to my world.    Won't You come on in?
             C (x32010@1)                          GMiracles (320003@1)I guess   Still happen now and then.
               C (x32010@1)  D7 (xx0212@1)                    GStep (320003@1)into my heart;    leave your cares behind
               C (x32010@1)  D7 (xx0212@1)                  G (320003@1) C (x32010@1)GWelcome (320003@1)to my world    built with you in mind.
 D7 (xx0212@1)                     G (320003@1)   D7 (xx0212@1)               GKnock (320003@1)and the door will open;  Seek and you will find
D7 (xx0212@1)               G (320003@1)       A7 (x02020@1)                  D7Ask (xx0212@1)and You'll be given  The key to this world of mine.
                 C (x32010@1) D7 (xx0212@1)                GI'll (320003@1)be waiting here    with my arms unfurled,
                  C (x32010@1) D7 (xx0212@1)              G (320003@1)  C (x32010@1)GWaiting (320003@1)just for you;    Welcome to my world.

Takes a while to get used to but it still works.
Peace out

(one line instrumental)
C (x32010@1)D7 (xx0212@1)G (320003@1)
                  C (x32010@1) D7 (xx0212@1)              G (320003@1)  C (x32010@1)GWaiting (320003@1)just for you;    Welcome to my world.