Okay I don't remember much about the episode accept that Garfield was playing video games and I remember John wasn't feeling well so he went to bed, and he ended getting appendicitis or something like that. All I remember is that Odie somehow managed to call for help and John went to the hospital and everything worked out fine in the end. I just wnat to if anyone out there knows where I can find this episode, no youtube doesn't have it. So please does anyone know where I can find it?

That's "Galactic Gamesman Garfield"
It's on the Season 3 DVD of Garfield and Friends.

Hope that helps!