Thanks for the info. I used the plugin Simple URLs. I hope I did it right. I am very green.
I googled CMS but I still can't tell you what CMS I am using. Sorry.
Regarding using 301s, yes I am probably using several. Not hundreds or anything but probably tens. This is because I am updating permalinks on the advice of my SEOmoz reports. Then the old permalink automatically redirects to the new one.
How can I get rid of the 301 redirects so I don't lose link juice?