Hi I thanks to all the advice I could get odbc to work in squeak on my mac. In case its useful to someone this are the steps:
0 I'm supposing you have an odbc dsn working using iodbc (the default mac driver, samething for unixodbc), and you downloaded the odbc client package from squeakMap
1 from a terminal create an odbc.framework directory. (sudo mkdir /System/Library/Frameworks/odbc.framework)
2 symlink the iodbc library into the newly created directory ln -s /usr/lib/libiodbc.dylib \ /System/Library/Frameworks/odbc.framework/libiodbc
3 in squeak browse ODBCLibrary class, change the method moduleName to: moduleName "Return the name of the module for this library" ^ 'libiodbc.framework'
4 inspect ODBCLibrary class and do "default _ nil" (do it) in the inspector. This class is a Singleton and you want the new instance to load the new moduleName.
5 try the ODBCConnection examples!
Thanks to all who helped me out! /diego