Can i sell minecraft for tc or is it agains rules? i cant run it anyway. And is there a way to have shaders on windows XP? cause it freezes when i try to put them on.

Read the minecraft ToS or w/e and see if it's not against it. Also i'm 90% sure you are only allowed to sell through PMs. You should probably get someone else to confirm it though just to be sure.

What usimm said, also, for the shaders, check your graphic card and video card settings. I used to be able to run shaders on my xp, but I bought a new computer with windows 7 that runs shaders fine.

It all depends on how good your graphics card actually is. Usually if you select 'Shaders' and it doesn't show up, you can't support them with your graphics card.