Squirtle lacks power though.
Bulbasaur: Great in defence, once it reaches its last evolution it will be like a tank. Easy to train.
Squirtle: Mixure of defence, attack and speed. If you want a pokemon that can stand a few big attacks and still be able to deal out quick damage, Squirtle is for you.
Charmander: My favourite starter pokemon. Hard to train and you will spend ages getting it to high levels, but once you do, nothing will stand in your way. Attack and speed for this pokemon, you will be able to deal out big hits while being speedy enough to go first.
Baulbasaur: Can beat the first two gym leaders easy.
Squirtle: Beat the first gym easy, secound gym harder but not to difficult.
Charmander: First two gym leaders are near impossible.
Hope I helped.
[Edited by SpartanAK47, 2/23/2008 3:17:04 AM]
After you get both gems for Ceilio or whatever his name is, then you can go in the Cerulean Cave I think