Having done a hard disc install,

How do I get rid of some of the stuff that was on the live cd, shows up on the menu's but when I try to uninstall, it tell's me that it's not installed.

For example open office 1.0.2/3 - I have already installed OOo 1.1.0

Also, whenever I look in the package manager to see if I can get rid of stuff that way, I highlight/mark packages that I know are in there, but the package manager wants to only install them?

regards

John