From the sound of it, this is going to be your primary use computer? for that, i would say light email and internet usage, wordprocessing and the like, but dont get excited about music (doubt the harddrive on that thing holds much more than the biggest nano anyway), photos or anything fancy. for a child as a first mac it would be good. This is essentially a 7+ year old computer, and even considering it for purchase speaks volumes over its pc counterparts (could you imagine going out and buying a pentium 2?) it also will most likely have OS 9 on it, so u dont get the functionality/current-ness of applications that os X has

if u could spring for a g4 imac (lowest at 700 mhz, up to 1ghz) then do that, then u can bathe in os x goodness, but itll cost u around 400