I\'m using the following:
DRIVER={Vertica ODBC Driver 4.1}; SERVER=lnxtabdb01.xxxx.com; PORT=5433; DATABASE=vertica; USER=dbadmin; PASSWORD=vertica; OPTION=3
Have you looked at http://www.connectionstrings.com/? It doesn't specifically have a Vertica DB listed but there dozens of other database types that might be similar enough to vertica that they will translate well....