I have copied my cardbox files onto my XP machine but when I try to open cardbox with the space bar it closes cardbox down. I am sure I should upgrade but of course I am familiar with the old system.. is there a way I can keep using it on XP?
Cardbox 4.10 works in XP (just tested) but that is not 1986...
If you make a shortcut in XP from Cardbox.com (in Explorer right mouse click), then you can view the properties of that shortcut (again right mouse click).
Try some options of compatibility mode and start Cardbox.com with that shortcut.
Perhaps you can make it working on that way.