its about this quest:
http://elderscrolls.wikia.com/wiki/Moss_Mother_Cavern

ive finished it.. and even got the reward...
but it still shows up in my journal.... and the guy just thanks me and not complete the quest officialy..
can some one help me with that?! or even with a console code that will force the quest to be complete


and another question...
can i erase quests from my journal? with some sort of a console code
i got a quest to join the thieves guild... and i hate those bastards
its really bugging me that it shows up in my journal...

Try using set stage first to see if that finishes the quest (Stage numbers http://www.uesp.net/wiki/Skyrim:Moss_Mother_Cavern_%28quest%29)

If you want you can also try (CompleteQuest ID to just complete the quest, GetStage ID for diagnostics)

Thx for that... Ill try this after work