Download (run) it from here:
http://wrfportal.org/DomainWizard.html
What's New in version 1.30
Added GUI editor for namelist.input, fixed NMM projection bugs, fixed nesting offset bug, increased precision of coordinates by decimal place, improved resolution of thumbnail images, improved Linux support --AIX-Ubuntu-Debian, other minor enhancements
Best regards,
Jeff Smith
Earth System Research Lab / NOAA
Boulder, Colorado