I want to buy a game called Lineage II: The Chaotic Chronicle. The system requirements says that you need a graphic card that is GeForce2 or better. I have an Intel (R) 82852/82855 GM/GME Graphics Controller. Is this better than a GeForce2?

here's an Intel(R) 82852/82855 Graphics Controller Family - Game Compatibility List. While that game isn't on the list specifically, judging by what games are on the list it should be able to play Lineage II: The Chaotic Chronicle as well.

(edit) I don't know if it's "better than a Geforce2 MX"

Check this out http://www.lineage2.com/guide/systemneeds.html. The reccomended requirements should be considered the minimum. You may be able to play that game but only with all visual settings turned down. Any video card costing more than $60 is better than your onboard video, especially if you're also using onboard sound. The minimum Id go on a video card is 128bit 128mb FX5200 or Radeon 9550. Both about $65 online.