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The boot is no longer available from Honda. What is wrong with yours? If it's just a minor split or tear they can usually be repaired with a weatherstrip sealer or similar. If I recall correctly, I think Shep recommends Shoe Goo.
[Edit - It looks like Shoe Goo is widely available, even at major retailers including Walmart, Sports Authority, etc.
DaveF - I will work on getting picture and signature added.
The boot has a large tear at the fold and is fairly brittle. I did some searching and was able to find a new one in a Honda dealers stock. Might of been the last available new one in the US; who knows. I can see that boot is going to be a big issue with others in the future - maybe there will be aftermarket one. I will repair my old one with Shoe Goo and keep as a spare.