Have you got any more details about the network and its target audience?
So far you have said you use custom software on dedicated machines, but why? There are loads of IRC networks out there, what is the niche for this one? Some IRC networks are for gamers, some are for opensource projects, some are for other stuff... what does this one do that the others dont? who will be using it?
The reason I ask is because I don't mind helping out on a project like this, but don't want to work for you if the network's audience is a load of peadofiles sharing porn, or anything dodgy/illegal?
Can you post up the name, or the address of the network, or the logo? Anything at all?
By the way you don't necessarily need the website making for you, have you looked into stuff like Mambo or Joomla or even Word Press?