Compiling Squeak on Windows http://akasta.com/downloads/Md5.cs is an implementation of the MD5 hash algorithm for Squeak done by Duane Maxwell. It is a stand alone class, with a self test built in, and integrates with Celeste for APOP authentication. It has been tested in Squeak versions 3.0, 3.2, 3.3, as well later version 2 images. http://dunkels.com/adam/uip/ is apparently a small open source TCP/IP stack designed to have a very small memory footprint. It may be very appropriate to use with Squeak on a machine without another operating ststem. It handles "ARP, SLIP, IP, ICMP (ping) and TCP protocols."