No it would not be a smart thing to do
they are on a memory card whitch you buy from a store
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Yes it can
It is on the playstation 2, but you are more likely to find it for the playstation 3
Yes, as long as you have a DDS plugin installed, such as can be found here: http://code.google.com/p/gimp-dds/
Short Answer: NoA stock PS2 will play PlayStation games, PlayStation 2 games, DVD movies and audio CDs. That is all. The PS2 homebrew community, however, has developed SMS player that has the ability to play Divx, Xvid, and mp3 files.
The PlayStation network has some information see related link
Hollywood and gaming
Sometimes your playstation 2 thinks it saved the game in the memory. Sometimes it doesn't. If you don't have the disk try putting the disk in and if you have saved this game many times and you still can't find your game and it says it has saved it. Try taking it back to where you got it and asking them if they know what's wrong and also don't forget to ask for a another disk if possible.
you have to buy this thing called i.ma.weener
Yes. You can find replacement AC adapter cables for the PlayStation 2 on numerous sites including this site, FreshDeals.com.