The "Requested server name not found." means that an entry for the ASE server is not found in your sql.ini file. Open a Command Prompt window, and use:
C:\> notepad %SYBASE%\ini\sql.ini
That will open the sql.ini file in notepad. You need an entry for your server. The name you are specifying in BO would be the entry name:
[<server name>]
query=NLWNSCK,<ASE hostname>,<ASE port number>
Close the file and save it.
To verify this is working, try using isql:
C:\> isql -S<server name> -U<userid> -P<password>
If you get a 1>, then you logged in and BO should also work. If isql wasn't successful, post the results.
Regards,
Mark Kusma