Agree with R_Hatch, I can see your irritation.  I once emailed O.Mizno about  that, but no reply(of course I wrote in Japanese). Maybe he is very busy.

About OBJ import/export , I am using two another plugins.

http://homepage2.nifty.com/zokeimaster/tools.html

zokeimaster(aka 'justfit' here)'s YetOnother plugin

http://fumiking.hp.infoseek.co.jp/html/index.html

FMK's  FMKPlug.lzh

I think these plugins can work on English Windows.