There is a php class to talk SIP2. Perhaps you can get some ideas from it. http://code.google.com/p/php-sip2/ Bill Migell Acosta wrote: > Michael, > > The ILS is Symphony by SirsiDynix and for sure it has the necessary SIP2 > compnents on the server side. I'm just looking to do a client on the PC > side (Windows, Mac or *nix is fine). The client will have a barcode reader > and receipt printer so the requirements for HW support is low. > > -- Bill Kuntz FCLA Open Systems Group (352) 392-9020 x 242