If the apps you want to remove came pre-loaded on your phone you can't uninstall them. You would need to "root" your phone in order to remove the unwanted apps. There are lots of posts regarding "rooting" your phone.
If you are speaking of apps that you have installed since owning the phone, then you can go to Menu>Manage apps, and click on the app that you wish to remove and click uninstall. Clear the cache and clear data before uninstalling.