Enforcer and I have been discussing how to try to automate the clan war system, and we need help! What we'd like to do is have some kind of browser interface where clans can see where they can attack, declare their attacks and defenses, etc etc. Unfortunately, neither of us have worked much with web development though, so we were wondering if anyone out there has, and could point us in the right direction.

The main problem we have is saving state of whats going on on the server. I am a C++ guru, and can do anything with that, but haven't ever tried to interface with web input before, and don't know if thats even possible with C++ (would a C++ DLL or API interface with HTML or Javascript?). We've discussed using Javascript, which is free and works great with HTML, but haven't found a way to save a file. We've also discussed using a SQL database to store information, but haven't worked with one of those either.

Can anyone point us in the right direction?

you need any kind of server side script to do this
for example PHP(Apache), Perl(Apache), ASP(IIS), ColdFusion(IIS). Also it is possible to use C++, but it is hardest way. Also it is possible to use Servlets (Java)
In your case it seems that ASP is better choice.
Next step is oppening MSDN or google and read 1-2 examples.
usualy ASP page looks like mix of HTML code and Server Side script