With a download of visualFORTH comes the Win32Forth package.
1. Download Instructions "Starting visualFORTH Alpha-Version for WindowsXP" from http://www.visualforth.org/Alpha/Downloads/Starting_visualFORTH.pdf
2. Download visualFORTH from http://www.visualforth.org/Alpha/Downloads/visualFORTH.zip and unzip as written on page 4 "2. Installation" of "Starting_visualFORTH.pdf"
3. Follow the advice in "Starting visualFORTH Alpha-Version for WindowsXP", page 29: "6. Appendix: Installation of Win32Forth" to install Win32Forth.
4. Follow the advice in "Starting visualFORTH Alpha-Version for WindowsXP", page 6 "2.2 Installation of visualFORTH"