You need to set up MinGW
http://neosource.1emu.net/MinGW.7zunzip that to a root drive (C:/mingw/ or D:/mingw/ or something)
next,
right click on "My Computer" and then go to "Properties"
You should get to the "System" window (similar to what's shown in the screenshot that's attached.)
Select the 'Advanced' sheet (on Windows 2000, called 'Environment' on NT).
Click on 'Environment Variables...'.
Click on 'New...' (under the 'System variables' section).
Specify a variable name of 'MINGDIR' and value of 'd:\mingw' (change the 'd:' as appropriate, if you are using a different disk!).
Click on 'New...' (under the 'System variables' section).
Specify a variable name of 'UNIX_TOOLS' and value of '1'.
Select 'Path' (under the 'System variables' section).
Click 'Edit...'.
Add ';d:\mingw\bin' at the end of the value line and press 'OK'. (change the 'd:' as appropriate, if you are using a different disk!).
after that , just bring up a command line window in the fba_source directory and type MAKE