CMS - Do you use one?

Hey guys,

Ok I have never used a CMS before and I’m wondering do any designers use one to update their portfolios? I currently never update my actual website due to it being coded in tables which is a total pain and I get bored of having to manually edit the content on every page.

Also, could I setup a CMS system where if I change a section on page, for example the news box, it would change the news on the other corresponding pages?

I have heard of some pre-made CMS systems such as mambo, however do you think I would need a custom built CMS system?

Thanks,
Lewis.