Loading saved games in pokemon Diamond

Hi everyone,I saved a game in Pokemon diamond and I can't figure out how to load it. I saved it in actual gameplay and when I couldn't load it I started a new game, and went to 'save state' but that didn't work. Help??

If I remember correctly your save settings need to be set to Flash 512KB. I'm unsure if a patch was necessary.

Right I have put my settings to flash 512kb, do I save in the actual game or do I Save State?? I've gotten quiet far and really dont wanna lose it.

Either are okay, or both.But, savestates is more convenient.

Right I went to save state and where the wee drop down menu it is all 0's....is that normal?? And is there a way to check I have saved without shutting the game off in case it hasn't?