How do you get extras / the games (in settings) on the xbox to appearunder extras??

Hi folks. I've got the Xbox 360. I've set up media center, which works
fine. The tuner works fine (this is Windows 7). However, under settings
on the Xbox (in media center), where it shows the games - (purble place
etc), all are ticked, I click on save. BUT none of them appear under
extras in media center (on the Xbox).

But, they appear under extras (in Windows 7 media center). So, how do
you get them to appear under extras?

So, I can access them from the Xbox?? There's no point having the option
to tick / untick the games on the Xbox, if none of them appear under extras.

Any info appreciated