Hello M.,
I have three kids, 7, 5, and 3, my oldest is the computer wiz, he's been playing on and using computers since he was almost 2 yrs. I've never bought him a toy computer, what I did was help him on mine at first, at tax time I usually upgrade my computer to avoid something happening while money is tight, so when I upgrade I pass down, now my middle child's computer isn't working anymore, but they both share my HP I bought about 4 years ago, my youngest really isn't into computers at all right now but when it came to games for the other ones there are soooo many. My advice with games is look online to see if there is a way you can buy the play house disney games, or the noggin games, when they are in full screen it's harder for them to click out of them, also, you will have to really work with him to teach him what he can and can't do, they really love to explore when they are that age, but if he's showing interest now he'll be easy to teach. I have a couple of memberships at a couple of websites, I pay about $17 a month for, (Shockwave.com, and Bigfishgames.com) they have a plethera of games that are great for kids, and fun too, not as much learning though. Another great idea is e-bay, if you look under children's pc games, you'll be able to find a multitude of learning games for children of all ages, mine liked the preschool games, and Freddy the Fish. I know it can seem scary at first, and you don't want him to mess up your computer, so try finding him a cheap one, there are so many now that are under $500, go to a pawn shop, he doesn't have to have the best computer, but letting him learn on one is going to be the best thing for him, my 7 year old teaches other people how to use computers, it's the new age, and the best way for him to learn is from you. I hope this helps, I know it's long, but for some reason I have a problem giving short answers, lol. Take care, and good luck.
Candi :o)