The way you are specifying the provider string is incorrect if you are trying to use a password. It should be (double-quotes replaced by []):

oConn.Open []Provider=Microsoft.Jet.OLEDB.4.0;Data Source=[] & filePath & [];User ID=Admin;Password=blargaria[]

Also, if you want to track down the problem if this doesn't work, remove the database password and try connecting with no password or user id set. Then at least you know if it is a problem with the security.