I knew that it was still in working draft status but I have never used images to change the layout (such as using them to create rounded corners) This is something I really need to work on because as of right now I really only know how to use CSS to create these effects. I wish they would hurry up and standardize it so that it would be more widely implemented into browsers (though IE would probably take a few more years before having the support).
As for validating I always use the W3C validators. For one they work extremely well and are easy to use. On top of what you said about them staying up to date.
I could not agree more as to CSS vs. graphics (when possible). Until the cool stuff such as rounded corners and filter effects are standardized and truly cross-platform compatible, if you want to work on doing some of this stuff in graphics to expand your skillset, might I suggest:
1) If you have access to Adobe PhotoShop, get it (I use it, #1 in my book)
2) Otherwise, plenty of Mac products i.e.
this page lists a ton of 'em
If you wish to implement one of my suggestions for rounded corner menu tabs, for example, I might suggest reading:
Adobe Fireworks CS3 rounded corners tutorial (basic, very easy)
Stretchable Table Curved Edges (good for content areas, blocks/buckets)
How to smooth corners of a square, make rounded (gaussian blurred approach)
Feel free to come back to the forum and post questions beyond the simple help and examples I listed here, as to rounded corners, graphics tricks, etc. as it's all part of design and development.
Since we're kinda on that topic, I'd just like to add this last thought:
When graphics are used other best practices come into play such as don't over burden the site with too many graphics, optimize the final images to save transfer time, be careful about PNG and alpha transparency and MSIE still, and so on. For your site, any images will be minor in size, nature and also they could be cached with the option to pre-load via JS, etc. So it
works in your situation if you opt to do so, I think.
But that's just my .02 - I'm offerig a slew of ideas and don't want to bury you in them! Thanks for responding! Cheers.
-jim