Jeff, offer to do it with the explaination that it will cost $XXX whatever.  I have built over 100 dnn sites in my career and I have come to the conclusion no matter how simple it is, someone can screw it up and then blame you. Actually, I think that is a general rule of web development.

I no longer bite my tounge on the price it will cost for me to fix someone else's mess-up.  And the price is even more if you hired a cut-rate "web guy" to build your site and then want me to fix what he messed up. After all, you were willing to pay them an arm and a leg for nothing, you should be wiling to pay me even more for a GOOD job. I am no longer a good samaritan in situations like that.  When a potential customer laments that he paid a fortune and got ripped off, I outright tell them I will be more than that, whatever it is.