CD-Rom suggestions for reception age child?

[Earlybird]

DD (4.5) has recently displayed an interest in computers, and now absolutely loves playing games on them. I have a few Dorling Kindersley cd-roms that I picked up at random at PC World, but wondered if any of you might suggest others. Thanks for any ideas.

My ds (5 1/2) likes the Scooby Doo games- they have to find clues and do puzzles. They are not outwardly "learning" games- but I actually think they are quite good as there are problem solving tasks etc - I tend to sit with him while he's playing them and help him when he's stuck.

dd and ds like the Jump Ahead series.

scotlou and LIZS - thanks for suggestions. Where would I be able to purchase?

Any other suggestions from anyone else?

The Clifford the Big Red Dog games are excellent & are packed full of learning - but make sure you get the English commentary not the American one.

Try Amazon, Staples or toys r us.

Jump Ahead - Excellent!