>用固定IP, TCP/IP 交流。 clientsocket, serversocket 先去讀讀，試試看怎麼用。 I know that. >希望交換資料的？ 先去讀一下資料結構跟演算法，然後設計通訊協定方式來交換。 Indeed socket parts have been done by other. I need to make the client parts. I can use the clientsocket and can connect with the server. I can use (1) clientsocket.socket.sendtext(....) or (2) save the text ino a file and socket.sendstream. The service does receive the information (It is because it save all the incoming message). The problem is the saved message cannot be open. Indeed, the message is in text format and can be used by any text editor. I need use an editor to open it. Whatsoever, there is a #255 character in the head of the file. I.e. at position, line 1 and column 1. I >如果使用 XML 如何做？ 你會 xml 的 parser 了嗎？你了解什麼是 xml 了嗎？ I used XML, but I do not know how to send XML file to another computer. I search from the net. It seems that delphi does not support Unicode. Is it correct? >直接傳送檔案？ 請”先去讀一下資料結構跟演算法，然後設計通訊協定方式來交換。” 看怎麼直接傳送檔案 How can I trsnsmit XML over a TCP / IP network. >例子？多謝你幫忙。 例子？cvsup, ftp, apache....etc 都是例子。 幫忙？不客氣。