It is really simple to do if you can build a regular html site.
This is a great tutorial of how to build a template for Joomla 1.0.
http://www.chette.com/main/content/view/111/This is a great little thing about how to convert that Joomla 1.0 template to a 1.5 template.
http://joomlatp.com/joomla-1.5-tutorial ... o-1.5.htmlAnd then here is a really cool piece of code that will allow you to add a pageclass suffix to any tag. (You might not use it if you're just starting, but bookmark it, you just might need it. I use it all the time now.)
http://forum.joomla.org/viewtopic.php?f ... 63&start=0