TCP/IP Hates me and wants me to fail.

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C#

Hey All! :-D,

Over the past coupla months I've read alot about TCP/IP and

System.Net.Sockets

etc and I made my own little server/client application. Simple. One connects the other listens and receives messages. All works fine on my end (testing). BUT, to my surprise, it never works on anybody elses computer. I give them the client, and I use my server to listen, and they can never end up connecting to my server. They always get a "Server took way way way too long to respond" and similar error messages. :(. I tried reading a little more about it and nothing I had read helped solve the problem. So, I turned to my second best friend (Google) and found about 20 sample client/server applications that I downloaded and tested. They all worked perfectly on my own computer. But when I got friends to test, same old story... Couldn't connect. My friends have DSL Internet. Does this matter? Can anybody help shed a little light on this? I'd appreciate any help I can get on this.

lots of thanks,
jay