Need Help with .dll problem! D:?

-So I put in a new internal Hardrive separate from my other so I have to choose which to use when i start up.



I installed Windows 7 got it all up and running, but then i try and install a game and I get all these .dll errors so i download the correct .dll file and replace so that worked but then it says there is another and I do the same and it pops up again and again as if it won't be fixed.



So i reformatted that hardrive and installed Windows XP and same thing. I then went onto my other hardrive that has XP on it and now that has same problem and it didn't help.



Anyone can help me know how to fix this without reformattingg my old hardrive as i don't have an external and don't want to lose all my stuff. I can though reformat my new hardrive as that will be the one I play games on and will store larger files like videos and such.



Also I have installed the latest Direct X and it does pretty much nothing.