You can simplify the install like this:
cat <<EOF > $HOME/fzb.reg
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Environment]
"PATH"="Value: c:\\\\windows;c:\\\\windows\\\\system;C:\\\\Python26;C:\\\\fuzzbunch-debian\\\\windows\\\\fuzzbunch"
"TEMP"="C:\\users\\root\\Temp"
"TMP"="C:\\users\\root\\Temp"
EOF
echo ">>> importing regkey..."
wine regedit /S $HOME/fzb.reg
You can simplify the install like this: