Having just finished a large company website using wordpress, i would say that Wordpress sounds like the tool for you here. Previously i had avoided wordpress, having not understood it very well and not really taking the time to look into it, but ive got to say im a convert now... It is VERY VERY easy to use once you figure out what is going on and there is loads of support out there for WP.
The first thing to do is install wordpress up on your sever and log in yourself. You can go to the theme tab within wordpress, and search for a theme that best suits the clients needs. THere are millions of templates out there, i like to google stuffon wordpress, just always put wp, or wordpress before your search criteria... ie wp themes, wp tables, wordpress graphs etc...
Nearly every plugin comes with instructions, and screenshots on how to install and how to use, again most things are free and well supported.
Editing wordpress can be a little bit stressful sometimes, Dreamweaver CS5 makes life a little easier, but honestly you do need to have a relative understanding of PHP to go through some of the coding to alter the look or feel, although a good template will give you some editable option in it to customise the look better. magpress is a good site to google, lots of good editable templates there. Again, google can be very useful tool on how to ... in wordpress.
Get started on it, then if you have any questions you can drop me a line and ill help. it feels a little restrictive at first but once you get to grips with it youll start to use it more and more im sure.
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