Validation...again...

Hi again. I'm working on a site and previously asked about validation through w3c. Well, my site so far states that 'This document was successfully checked as XHTML 1.0 Transitional!' which is great but as soon as i change the height in my tables it becomes 'Error found while checking this document as XHTML 1.0 Transitional!'

I understand that the 'height' attribute is a big problem for validating but i'm not sure how to overcome this. I've looked at another site that uses <div> but cant understand how they layout the site...tables are so easy! i'm not so good with the code side of things as some people here know, i've always been a designer not a coder...wysiwyg!!

The validating is for my personal gratification but would also be a nice touch to show to clients. what is the easiest way to change heights within a site to comply to w3c?

here is the offending site so far.

http://www.sidfordprintanddesign.co.uk/i...

well for some reason the background image isn't showing but nevermind. also i realise it's very basic that's because it's just a test for now.

many thanks,
mike.