OpenCanvas on Win2k3? (Working on a fix)

My friend and I use our win2k3 installations as desktop environments. He really wants to get OpenCanvas (He does alot of drawing/sketches)

Unfortunately, it refuses to install on our OS. It uses an EXE file, so I can't open it in Orca or anything. However, I found part of the code from the MSI section of the .exe

http://kyoushu.com/setup_oC306PE.exe -- There's the exe (legal, don't worry) if you think you can help

Name=INTL
Version=1.00.000
DiskSpace=8000;DiskSpace requirement in KB

[Startup]
CmdLine=
SuppressWrongOS=Y
ScriptDriven=N
ScriptVer=1.0.0.1
Product=openCanvas3.06E Plus
PackageName=openCanvas3.06E Plus.msi
MsiVersion=1.20.1827.0
EnableLangDlg=Y
SuppressReboot=N
PackageCompressed=Y
DataCabInSetupEe=Y
UI=1001

[SupportOS]
Win95=1
Win98=1
WinME=1
WinNT4=1

[Win95]
MajorVer=4
MinorVer=0
BuildNo=950
PlatformId=1

[Win98]
MajorVer=4
MinorVer=10
BuildNo=1998
PlatformId=1

[WinME]
MajorVer=4
MinorVer=90
BuildNo=3000
PlatformId=1

[WinNT4]
MajorVer=4
MinorVer=0
BuildNo=1381
PlatformId=2
ServicePack=768
[openCanvas3.06E Plus.msi]
Type=1
Location=CompressedMSI.Cab
[Languages]
count=1
default=409
key0=409
0x0409.ini

I'm pretty sure that's where it's stopping us... But I already tried changing "SuppressWrongOS" to N and it didn't work... any other ideas?