Socks firewall problems and Mail firewall problems


We're running a Socks firewall at the office, and I'm having difficulty running ftp applications and Mail on OS X, I assume because of this firewall. In previous OS versions I had to use the Socks wrapper program available with Interarchy. Does anyone know a non-Classic Socks wrapper for use with Native OS X applications?
Also, has anyone had problems setting up Mail to run through a proxy server?