We have an ASP.NET product that we would like to be able to support
Internationalization.

Are there any sets of vendor tools to simplify this process?

Also I am curious to understand how simple it could be to produce a
translation of an ASP.NET web site.

I assume it would be necessary to export all the strings out in XLIFF format
to be translated, and then be able to load them in again, following which
there would need to be some way to adjust the control sizing and layout to
fit the new text size.

Thanks for any help in getting me started on this!