Clearing things up

Okay, the thing that's going to kill my program is not remembering that South and West have to be added backwards. In that case...

North: 
0 - Start Adventure
1 - Borgin & Burkes
2 - Room of Requirement
3 - Roland Kerr College
4 - Tax
5 - Tardis
6 - Redhaven
7 - Room of Requirement
8 - Piccadilly Circus
9 - St. Mungos 

East: 
10 - Platform and 9.75
11 - Speedy's Cafe
12 - Avalon 
13 - Isengard
14 - Taxi
15 - Grimmauld Place
16 - Room of Requirement
17 - Quidditch 

South: 
27 - Go to 
26 - Ministry of Magic
25 - Beaversdam
24 - Northumberland Street
23 - 221 B Baker Street
22 - Wardrobe
21 - Aslan's Country
20 - Room of Requirement
19 - Hagrid's Hut
18 - Tavern 

West: 
35 - Hogwarts
34 - Citadel 
33 - Room of Requirement
32 - The Ealdor 
31 - Hogwarts Express
30 - Room of Requirement
29 - Bagshot Row
28 - Mordor