Excuse me.

sumimasen: excuse me
iku: go
ikeba: go (subjunctive mood)
ii : good
donoyouni : how
dou : how
eki : station
...niwa : in order to... / for
suru: do
shitara: do (subjunctive mood)

Sumimasen: Excuse me.
Eki ni ikuniha dou shitara ii desuka?: station to, go for, how, do, good , is : How do I get to the station?

In Japanese, sometimes the subject is ommitted.

massugu: straight
michi: road, way
kono: this

Kono michi o massugu ikeba ii desu.: this, road, straight, go, good,is: Go straight this way.