Web server to download class definitions?

Hello,
There's still one thing that i do not understand about RMI.
I find on the website below the following quote "Classes definitions are typically made network accessible through a web server".
http://java.sun.com/docs/books/tutorial/rmi/overview.html
However, I have created and tested a small RMI example, and there was no need for a webserver (although, i tested my small rmi testapp both client and server on the same machine).
By the way, my small testapp was:
- an interface that extends java.rmi.remote and defines one method that returns just a string "ok".
- the implementation of that interface
- a client that calls the that remote object, and it prints "ok", without problems.
Thus, what is this kind of "webserver" then???
Why does everything works in my small testapp, without a webserver??
Or is there a webserver that i can not see??
Am I missing some information, or do i see something wrong???
Thank you.

is that maybe necessary when we have the rmi server, the rmi client and the rmi registry on three different machines?

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Dear Ludek,
I have tried manually registering the sacommlayer.dll already however this didn't make a difference.
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Find below the logs from process monitor for the 64 bit server.
It definitely shows where it is failing.. any suggestions to fix it?
I can email more detailed logs if you supply me with your email address.
Kind Regards
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processes from erroring 64 bit server
00:28:46.6463180     w3wp.exe     3948     RegOpenKey     HKCR\Wow6432Node\CLSID\{059AC10F-0010-4C43-8876-1FC7BEAF218B}     SUCCESS     Desired Access: Read
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00:28:46.6463935     w3wp.exe     3948     RegQueryKey     HKCR\Wow6432Node\CLSID\{059AC10F-0010-4C43-8876-1FC7BEAF218B}     BUFFER TOO SMALL     Query: Name, Length: 0
00:28:46.6464137     w3wp.exe     3948     RegQueryKey     HKCR\Wow6432Node\CLSID\{059AC10F-0010-4C43-8876-1FC7BEAF218B}     SUCCESS     Query: Name
00:28:46.6464472     w3wp.exe     3948     RegOpenKey     HKCR\Wow6432Node\CLSID\{059AC10F-0010-4C43-8876-1FC7BEAF218B}\Progid     NAME NOT FOUND     Desired Access: Query Value
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00:28:46.6465759     w3wp.exe     3948     RegQueryValue     HKCR\Wow6432Node\CLSID\{059AC10F-0010-4C43-8876-1FC7BEAF218B}\InprocServer32\(Default)     BUFFER OVERFLOW     Length: 144
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sacommlayer.dll 12.0.0.683
Edited by: sw1sher2 on Feb 18, 2010 1:55 AM

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