I haven't been paying attention to EGL so excuse me if this is old news.
I'm signing up right now to see what you can do...
As of yet it appears you can only bid on items that are listed in english? Or at least on the search engine on the English page, you can only see items from sellers that have listed it in English...so not much selection.
You can use the regular Japanese search with your login (but this is really pointless if the seller doesn't ship overseas--not to mention I already have a personal account).