Yea man, scanning is an awesome hobby! I also have a 72XLT, it is surprising what it can pick up for a thing of it's size. From my house in Auckland, I can hear Whangerai and Corromandal traffic on a good day!
Here is my list of frequency's, some of them may be helpfull to you, although it is mainly based around Auckland ATC:
Bank 1) Auckland International
1 NZAA Tower Primary 118.700
2 NZAA Tower Secondary 120.800
3 NZAA Delivery 128.200
4 NZAA Ground 121.900
5 NZAA Apron 123.000
6 NZAA ATIS 1 127.800
7 NZAA ATIS 2 127.000
8 Ramp (Air NZ Int'l) 131.900
9 Ramp (Air NZ Domestic) 132.900
10 Ramp (Air NZ Link) 131.000
Bank 2) Auckland Regional Control
11 Auckland Control 129.500
12 Auckland Area Control 120.500
13 Auckland Control North 124.300
14 Auckland North Control 125.500 or 119.500???
15 Auckland Control South (ChCh) 126.0
16 Auckland Control Central North Island (ChCh) 119.500 or 125.500???
17 Auckland Control RADAR 129.6
18 Auckland Oceanic Control Primary 123.9
19 Auckland Oceanic Control Secondary 134.0
20 Auckland Information (ChCh) 118.500
Bank 3) General Aviation Frequencies
21 Ardmore Traffic (Unicom) 118.100
22 Ardmore ATIS 121.000
23 Auckland Aero Club 133.700
24 Ardmore Flying School 133.825
25 Massy University 133.650
26 Auckland VFR MBZ (Waiheke) Traffic 120.400
27 Kaipara Flats VFR MBZ (Parakai) Traffic 119.100
28 North Shore VFR MBZ (Dairy Flat) Traffic 118.000
29 Great Barrier Island VFR MBZ Traffic 124.400
30 Mercer VFR MBZ (Pokeno) Traffic 133.05
Bank 4) Large Airlines
31 Air New Zealand (Star Alliance) 131.900
32 Air New Zealand Domestic 130.300
33 Air NZ link (Eagle) 130.900
34 Air NZ link (Nelson) ???.???
35 Air NZ link (Mount Cook) 131.800
36 Great Barrier Airlines 130.600
37 Mountain Air ???.???
38 Qantas Int'l 134.050
39 Garuda / Argentina / Cathay / 133.950
40 Origin Pacific Airways 131.100
Bank 5) Smaller Airline Companys
41 Westpac Rescue 129.900
42 Police Eagle 131.300
43 Coastguard 133.050
44 NZ Warbirds 122.100
45 Christian Aviation 133.300
46 Drury Gliding Club 134.450
47 NZ Post 131.600
48
49
50
Bank 6) Military
51 Whenuapai Tower Primary 134.500
52 Whenuapai Tower Secondary 119.900
53 Whenuapai Tower Back Up 255.400
54 Whenuapai ATIS 270.600
55 Whenuapai PAR Primary 125.700
56 Whenuapai PAR Secondary 128.300
57 RNZAF Air Operations 135.100
58 RNZAF Northern Ops ???.???
59 RNZAF 40 Squadron 135.400
60
Bank 7) Other New Zealand Airports
61 New Plymouth Tower 124.700
62 New Plymouth Approach 118.100
63 Hamilton Tower Primary 122.900
64 Hamilton Tower Secondary 125.900
65 Tauranga Tower Primary 118.300
66 Tauranga Tower Secondary 123.400
67 Whangarei Tower (Unattended) 118.600
68 Taupo (Unattended) 118.400
69
70
Perhaps Towerguy can help us out here
