Start by listing the components and determining how many of them are obsolete. That tells you how complete this mishmash CAN be and gives you a line on what new components are necessary.

This also tells you which cables you can just pull out of there and get rid of.

Next, check the URC programming to get a sense of if and how it's organized. If the programming is crazy or disorganized, abandon it. You might want to just abandon it anyway, rather than, for instance, analyze every damn macro to see what details might be a problem. Chances are a system physically organized this way will have programming that's equally difficult to cope with.

And yes, there's no way to estimate how much this will cost. I'd go out on a limb and tell them you ESTIMATE that after four days' labor (two guys for two days each), you'd be able to give them an equipment estimate and a very rough installation estimate. Remote programming would be separate, too.

By the way, that slide show, that starts by itself and has no obvious commands to stop it, is a pretty rude thing to spring on someone. I hope you don't provide information to your client this way! Now that I've played with it some, I see how to work it, but I'd still rather have several photographs that I can scroll through without them starting up on their own.