Community help on DB import seeked

All - I am running IDS 11.5 on my personal XP box. When using the dbexport command I get an export (schema and data files) according to the documentation. Now I have been handed another DB export that allegedly has been created with the same 'dbexport' command as well. However this export does not contain { unload file name = xxx} clauses in the schema file. More then this the data files have an 'unl.a' extension. Question 1: Is this difference a version or an OS issue? Has the export been created with a different command maybe? Question 2: Is there a difference in behaviour between the load and the dbimport command when it comes to loading of data files? Question 3: Would anybody have a hint on proper settings when it comes to creating a DB and loading associated data files that - have all sorts of characters (latin, bulgarian, greek) - which are properly encoded as UTF-8 within the files - which need to go to DB CHAR fields? I have played around for two days now with different locale settings. Tried many combinations of DB, SERVER and CLIENT. Nothing seems to work......;-( Especially I tried combinations that according to another post work on UNIX... Thank you very much in advance, any help appreciated, Gerrit