How can i finish the Gesen bow, i have the bow and the string! help me please!

Cromwell will fix it.

Cromwell lives in the dock district, to the very eastly building on the stairs.
Worth a visit as there are several weapons he builds for you.

so you have the bow and bow strings (if you dont have the bow) MINOR SPOILER go the the bridge district and do the tanner quest. if you dropped the bow.. sorry man, if ya didnt then take it to cromwell in the docks district

Ok, thnx, i'll get right to it, after school though... Damn can't wait!