A mod that improves over 70 icons has been released for WinSPWW2 

It's easy to install and won't cause any OOB or security problems even if installed mid-game.

Here's some of the icons:

You can read more more about it, and download it, here:

http://forum.shrapnelgames.com/showthread.php?p=806875#post806875

Here's some icons in BMP format, for those that want to individually mod vehicles.

Scale:

SP infantry are about 3 or 4 inches to the pixel.
Soft vehicles are usually 5 inches to the pixel.
SP AFVs are usually 6 inches to the pixel

German Utility

German Motorcycle Sidecar  - snow camo - BMW-R75, '4WD' 92Kmh, prod: 17,000 

Kettenkraftrad   - halftrack, 80Kmh, prod: 8,345

Schwimmwagen  - amphibious, '4WD' 80/10Kmh

Kubelwagen   - '4WD' 83Kmh, prod: 50,435

Kubelwagen   - winter

Kubelwagen   - desert

Kfz.15 Horch 901  - 4WD, 95Kmh, prod: 14,911

Kfz.15 Horch 901  - winter

German

Light Trucks

Steyr RSO   - gun tractor, track, 30Kmh, prod: 28,000

Krupp L2H43 'Boxer'  1.15ton, 6x4, 70Kmh, prod: 7,000

Krupp L2H43 'Boxer'  open

Krupp L2H43 'Boxer'  munitions

Steyr 1500A  - 4WD,90Kmh, prod: 12,450

SdKfz 10   - gun tractor, 1ton, halftrack, 70Kmh, prod: 17,000

SdKfz 10   - desert

SdKfz 10   - winter

German Medium Trucks

Einheits-LKW   -2.5ton, 6x6, 70Kmh, prod: 11,800

Opel Blitz Alrad  -3ton, 4WD, 80Kmh, prod: 24,981

Opel Blitz Alrad  - snow

Opel Blitz   -3ton, 2WD, 85Kmh, prod: 82,365

Opel Blitz   -snow

Maultier   -3ton, halftrack, 38Kmh, prod: 4,000  

German Heavy Trucks

Bussing-NAG 500  -4.5ton 4WD,68Kmh, prod: 14,813 

SdKfz 7   -8ton, halftrack, 51Kmh, prod: 12,187

SdKfz 8   -12ton, halftrack, 50Kmh, prod: <1942 1,615

Mercedes L6500   -barge carrier, 6.5ton, 2WD, 57Kmh, prod: 2,145

Britain

Utility

Austin 8 Tourer  -2WD, 90Kmh

Humber Super Snipe   -2WD, 127Kmh, prod: 6,858

Humber Super Snipe   -desert

Humber Super Snipe   -winter

Austin 10 'Tilly'  -2WD, 89Kmh, prod: 30,000

Austin 10 'Tilly'  -desert

Humber Box   -4WD, 101Kmh, prod: 6,500

Humber Box   -desert

British Light Trucks -15cwt: 0.75ton

Bedford MWD   -15cwt, 2WD, 80Kmh, prod: 65,000

Bedford MWD   -desert

Bedford MWD   -ammo

Morris CS8   -15cwt, 2WD, 75Kmh, prod: 21,318

Morris CS8   -desert

Morris Quad C8   -gun tractor, 15cwt 4WD, 80kmh, prod: 10,500

Morris Quad C8   -desert

Guy Quad-Ant   -15cwt, 4WD, 80Kmh, prod: 4-5,000

Guy Quad-Ant   -desert

British Medium Lorries -30cwt: 1.5ton

LRDG Chevy 30cwt  -'4WD', 80Kmh 

LRDG Chevy 30cwt  -RAF roundel

Austin K30   -30cwt, 2WD, 80kmh, prod: 14,000 

Fordson WOT8   -30cwt, 4WD, 60Kmh, prod: 2,516 

Fordson WOT8   -desert

British Heavy Lorries

Bedford QLD   -3ton, 4WD, 61Kmh, prod: 52,250  

Bedford QLD   -desert

Bedford QLD   -desert, open cargo

Bedford QLT   -extended cargo, 3ton, 4WD, 61Kmh, prod: 3,373

Bedford QLT   -desert

AEC Matador   -gun tractor, 3ton, 4WD, 58Kmh, prod: 10,000

Leyland Hippo   -barge carrier, 10ton, 6x4, 65Kmh, prod: 1,330

Leyland Hippo   -flatbed

Soviet

Utility

GAZ-67    -Soviet Jeep, 4WD, 90Kmh, prod: 4,851

GAZ-M1 'Emka'   -Staff Car, 2WD, 100Kmh, prod: 62,888

GAZ-M1 'Emka'   -winter

Soviet Light Trucks

GAZ-M415   -0.75ton, 2WD, 90Kmh, prod: 8,000+

GAZ-M415   -ammo

STZ-5 Gun Tractor  -track, 22Kmh, prod: 9,944

Soviet Medium Trucks -1.5ton

GAZ-AA    -1.5ton 2WD, 70kmh, prod: 1,000,000

GAZ-AA    -ammo

GAZ-AAA   -1.5ton, 6x4, 70Kmh, prod: 37,000

GAZ-60    -halftrack, 1.5ton, 35Kmh, prod: 900

Soviet Heavy Trucks

ZiS-5    -3ton, 2WD, 60kmh, prod: 1,000,000 

ZiS-5    -snow

ZiS-6    -3ton, 6x4, 55kmh, prod: 21,239

ZiS-6    -snow

ZiS-42    -halftrack, 3ton, 45Kmh, prod: 5,931

YaG-6    -5ton, 2WD, 40Kmh, prod: 8,075

YaG-10    -barge carrier, 10ton, 6x4, 40Kmh, prod: 333

USA

Utility

Willys Jeep   -4WD, 104Kmh, prod: 49,000

Willys Jeep   -desert

Ford GPA   -amphibious, 4WD, 80/9Kmh, prod: 12,000

M29 Weasel   -track, 58Kmh, prod: 7,000

M29C Weasel   -amphibious, track, 58Kmh, prod: 8,000

Dodge WC-56   -0.75ton, 4WD, 87Kmh, prod: 28,600

US Light Trucks - Weapon Carriers

Dodge WC-21   -0.5ton, 4WD, 89Kmh, prod: 10,787

Dodge WC-51   -0.75ton, 4WD, 86Kmh, prod: 98,296

Dodge WC-51   -ammo

Dodge WC-52   -0.75ton, 4WD, 86Kmh, prod: 98,296

US Medium Trucks

Dodge WC-62   -1.5ton, 4WD, 80Kmh, prod: 43,000

Dodge WC-62   -ammo

Chevy G7107  -1.5ton, 4WD, 77Kmh, prod: 167,373

GMC CCKW 'Jimmy'  -2.5ton, 6x6, 72Kmh, prod: 562,750

GMC CCKW 'Jimmy'  -with AA gun

US Heavy Trucks

Mack NM   -6ton, 6x6, 57Kmh, prod: 10,000

Mack NO   -7.5ton, 6x6, 54Kmh, prod: 2,000

Mack NR-15   -barge carrier, 10ton, 6x4, 84Kmh, prod: 2,050

US Gun Tractors

M4 High-Speed Tractor   -track, 53Kmh, prod: 5,500

M4 High-Speed Tractor  -snow