[quote name='amacher']I was kind of wondering about this too. I kept hearing so much great stuff about Pokemon games, when they first came out I ignored them since the cartoon looked kiddish. I decided if I can get one for around $10 I would pick it up to try out. Used the BB coupon awhile back and got Explorer's in Time. Haven't played it yet wondering if it would be ok to jump in here or do I need to play something else before hand?[/QUOTE]
If I'm reading right you have Pokemon Mystery Dungeon: Explorers in Time.
That's sort of a side story/genre pokemon game. Like a spinoff. I've never played it, but I know it's not one of the main Pokemon RPG's, those are all named after colors or gems & metals, like Red/Green/Diamond/Pearl/Gold/Silver, etc.
I don't think that game has the traditional Pokemon collecting and battle gameplay.
You definitely don't need to start with older Pokemon games. The gameplay is 99% the same in every game, and each game has it's own self contained story.
I'd recommned one of the new DS games, Heart Gold, or Soul Silver. You may also wanna check out Platinum, which is another DS game that is sort of a remix/greatest hits of the two DS games before it, Diamond and Pearl.
Diamond/Pearl/Platinum are 'new' adventures, while Heart Gold and Soul Silver are remakes of older games, but since you've never played them, they are new to you!