Firstly, good to see you are using a simple but very clear layout. I really think it is the best way to go for most of us.

I like the backgroud creamy colour on the opening page but think that should be used on the other pages too. The leap to a stark white is a bit of a shock to the system.

I notice SilkTide reports a number of errors - 80 on 3 pages. I would fix these even if to date you haven't encountered a browser that has failed. The reported does mention possible accessibility problems for the disabled (an it isn't only the UK that have laws concerning this BTW) so I don't know how a text reader would work.

I'd suggest you run it all through the w3c validator (http://validator.w3.org/) I don't think it would take you long to correct and if you wish, once done, you can even add a logo to your page to show you have taken the trouble to ensure you have produced compliant html.