Please use puctuation in your posts! Your startpost is very hard to read because I dont see where the sentences end.

1. No, there is no solution for this problem. You have to live with this and tell your users to instal PROPER drivers. As far as I know there is not a single game/product that will do this for you, automatically.

2. Well, for small projects it's not really important to have detailed system requirements. You could however, check the taskmanager and see how much RAM/CPU your game consumes (test it on different systems). If you feel that a modern system is required in order to run the game, make up some approximate requirements. If you are using shaders or a specific DirectX version, you should mention that too (including the video-card models that meet your requirements).