So far, the refrain translated:
Dschin Dschin Dschinghis Khan
Hey brother Ho brother
Nice brother Go brother
Dschin Dschin Dschinghis Khan
Hey rider Ho rider
Nice rider Go rider
If you are (a) young (man) whahahaha
Now it's the chance whahahaha
I'll try to translate the rest too, but if anyone else is faster than me I would absolutely not mind it 
Thanks for those lyrics they are exact.
Although is it just me, or does it really sound like:
Hey Brother Ho Brother
Nice Leather Go Brother 
I promise! Evertime I sing on the song or listen to it sound just like it.
Although that would really be weird lyrics!
Credits:「ジンギスカン」
作詞:B.Meinunger 訳詞:山本伊織 作曲:R.Siegal 編曲:ダンス☆マン
C/W「ダーリン I LOVE YOU」(Berryz工房Ver.)
作詞・作曲:つんく 編曲:酒井ミキオ
Romaji:
"Dschinghis Khan"
Lyrics: B.Meinunger
Translator: Yamamoto Iori
Composer: R. Siegal
Arrangement: DANCE☆MAN
"Darling I LOVE YOU (Berryz Koubou Version)"
Lyrics/Composer: Tsunku Arragement: 酒井ミキオ (I think it's Sakai Mikio)
Isin't it strange that Tsunku is both Lyrics & Composer to this song if it's suppose to be a cover? =S
Is it a song written by Tsunku before or did he just change both the composing & lyrics (which would make it a new song. :p).
Although Sakai Mikio doesn't sound familiar within H!P...