Hi,
since SP06 you can consume MDX-based .UNV universes from Universe Designer Tool, into Explorer.
otherwise, you need to use a relational BW-SQL federated .UNX from Information Designer Tool.
There is no option to use a BICS OLAP connection, or try to build a Business layer ontop of a BW-OLAP connection. This isn't supported.
Regards,
H