OLAP functionality in 3-Tier configuration

Hi, Has anyone been successful in setting up a 3-Tier configuration to connect to an OLAP server? I was able to get connected to our OLAP Server using a 2-Tier configuration but was not successful in connecting to our OLAP Server using a 3-Tier configuration setup. Received the below error: Method ‘Connect’ in COM object of class ‘{B492C386-0195-11D2-89BA-00C04FB9898D}’ returned error code 0x80040075 () which means: Cannot connect to the Analysis server on computer ‘nbvan738’. Connection to the server is lost. Any comment is greatly appreciated. Cheers, Peter