Thanks for the replys!

btw: this is DB2 8.1 fixpack 14 on Win 2003 spk 2

I uncataloged the db and attempted to recreate a new one under the new instance with the same name and got the same error. Then I followed nvk@vhv's idea and renamed the tablespace and node physical file directorys with "old" at the end and now I am able to create the new db with the same name as the old one.

Thank you all for your help and solving my issue.