To see item and furniture names in other language, let's say French, then
you need to run ACToolkit with parameter "-l 5", so let's say I have this
ACToolkit.exe file/application in folder "C:\ACCF", then in Windows XP environment, I will choose "Start" button at the left bottom bar (where you could find commands like to shutdown or log-off), then choose "Run", and then type the following in the "Open:" text line:

C:\ACCF\ACToolkit.exe -l 5

Hope this helps.