Is Kingdom Hearts Available on the Playstation Network?

I've decided on buying a Ps3 Slim but haven't been able to play some of the old ps3 games because I've never owned a Playstation before, my questions are,

1.Are Kingdom Hearts 1,2, and Re:Chain of memories available for download on the Playstation Network.

2.Are the old Metal Gear games available on the Playstation Network.

3.What are some good games I should buy with my Ps3?

Suggestion:

Nope I think only Ps1 classics like FFVII are sold in the PSN store not Ps2. You should find out whether your PS3 is backwards compatible (meaning that it's compatible with ps2) and download the file on ps3 network for bcakwards compatibility. I don't remember what the name of the file was, but it's free so don't worry.