1. Create a win98 bottle:
CrossOver / Configure / Manage Bottles... / +
New Bottle Name: IrfanView
New Bottle Type: win98
Create
2. Install Microsoft Visual C++ 6.0 Redistributable:
CrossOver / Configure / Manage Bottles... / IrfanView / Applications / Install Software...
Runtime Support Components / Microsoft Visual C++ 6.0 Redistributable
Install / Done
3. Download latest iview4??_setup.exe and irfanview_plugins_4??_setup.exe
4. Install iview4??_setup.exe:
CrossOver / Configure / Manage Bottles... / IrfanView / Applications / Install Software...
Unsupported Applications / Other Application
Select an installer / Choose Installer File... / iview4??_setup.exe
Use this installer / Install / Next / Next / Select all / Next / Next / Yes
uncheck "Start Irfanview"
Done
5. Install irfanview_plugins_4??_setup.exe:
CrossOver / Configure / Manage Bottles... / IrfanView / Applications / Install Software...
Unsupported Applications / Other Application
Select an installer / Choose Installer File... / irfanview_plugins_432_setup.exe
Use this installer / Install / Next / OK / Done