I have gone through the process of designing a webpage using Xara Designer Pro (as of today the latest version) and everything is going fine. The previews look good in browsers, and it behaves as expected.
However, once it is published to the website, it looks absolutely crap. I have published several of the default templates to see if its a problem with my design and achieved the same result- fonts are missing, text colour is black, some sections are missing entirely and graphics look terrible.

www.awarrick.co.uk is currently hosting an example of said terribleness.

Why is this happening? I have tried numerous ways of correcting and different methods of uploading the HTML (using the FTP in Xara and manually doing it myself) but it all ends up looking like my dog managed to intercept the upload.
Admin help would be much appreciated- we are a small business looking to get our website live ASAP and this is rather frustrating to say the least.