Hi,
Here is the steps I've done so far.
-- backed up the hardisk
-- exp80 full=y
spool network
-- select name from $datafile
-- select name from v$controlfile
-- select * from v$logfile
spool off
-- copy init.ora,tnsname.ora to network
-- reformat the hardisk
-- installed winNT server pack6
-- installed oracle8.1.6

My 805 database has a desinger repository.
So when I did a full EXP I assumed it included the repository with it..( Plz correct me if I am worng)..I installed
816 (using preconfigured database) on my NT server and did a full import, everything wen smooth(except for the designer stuff) any idea !!!!!!!!!!!!!!!!!!!!!!!!!!!!

HOPE THIS HELPS
thanks,