if you have the old 2006 fmm you can take the language file from that (default location: C

Program Files\FM Modifier 2.0 )
its called eng.txt. drag the file to the desktop. now upgrade you fmm modifier to the latest version (the chinese one) and go into the directory (now located at: C

Program Files\FM Modifier 2.1 )
you should see a file called chinese.txt, (either delete it or rename it chinese.txta)
now you need to rename the eng.txt file on the desktop to chinese.txt and place it into C

Program Files\FM Modifier 2.1.
startup fmm and you will then have 90%of the program in english (the only parts that arent are the dropdown boxes and the tabs down the side, but if you used the old fmm all the buttons are in the same place.)