Options for Win 98 Machine - Linux (which version?)

I wouldn't go for the puppylinux. It's more for really old systems.

An AMD 650 w/384Mb Ram will run any Linux distro you want. I would stay with something Debian based. That includes Debian, Ubuntu, Mepis, Knoppix, etc.

I don't know, but aren't the NickJR and PBS Kids games all flash driven web games?
Even if not, as long as it's not super dependant on DirectX, it should run fine on Linux through WINE.
Another great WINE resource is Frank's Corner.


Ubuntu is really rolling right now. Do not buy into the "no support" bru-ha. Ubuntu (as well as most others) is very well supported.
You can generally find any answer you need in the Ubuntu Forums.