If you're expanding your e-commerce operation outside the United States, you need to realize that customers in Europe are not the same as US customers. They may be more nationalistic. They may have accent preferences. There may be currency and shipping issues that need to be coded into your website.
Matthew Brown, on PFS Web, has a very nice review that compares European versus US e-commerce operations and some nice "do and do nots" that should be considered.
It's worth a 10 minute read. And far more important to your business that Casey Anthony.