Have New Generation Itouch - Downloaded Apps & Games - How Do I Get Them To

Hello:I Have The New IPod Touch 32Mg.I Downloaded Apps & Some Games.But Dont Seem Able To Make Them Work.I See On The Bottom Of The Page Before Buying The Games I Downloaded Something About Getting IPhone 2.0.Do I Need To Down Load IPhone 2.0 To Get The Games To Work.Or Am I Not Doing Something I Should Be Doing.Any Help Would Be Appreciated.( howardr1124@aol.com )My Computer Is Running Fine My Music I Running Fine As Well As My Photo,s.Just a Problem With The Games.