Are .dll files compiled into the web service program?

If I make a change to an object file (.dll) and install it in the GAC, the client program does not know about the change. I've found that if I recompile the client, *then* it will recognize the new behaviours in the .dll...

Am I mistaken in believing the following:

- I can build a business object into a .dll file and install it in the GAC
- I can build client programs to access this business object remotely on a LAN, WAN, internet, whatever.
- I can change the logic in the business object and re-install a new .dll in the GAC
- All the client programs will behave according to the new business object's logic

Is the .dll compiled into the client? It seems to be, regardless of the setting of "Copy local"...

Now, I'm asking this question for a third party, so I'm fuzzy about the details, but I too am confused about his findings...

TIA