iWeb, templates, and WordPress

I created a nice simple website in iWeb 08, and it has served me well. However, I now want to upgrade and use a template from WordPress. Am I able to import the template into iWeb and then edit the bits I want, or should I be using something different altogether?

Any suggestions gratefully received here. I am migrating the site to a Tucows shop, and they support WordPress so should I possibly be doing it online rather than here on my Mac?

Thanks for any help