dont know how to install

hi i havent used unuty for a while and when unity 2 came out i dowloaded it and when i open the file it doest auto instal unity like before but it include few file and i dont know how the extrac them to which folder
the file include data,info.plist,wedplayer_win.dll,wrap_oal.dll
Can someone help show me how to install thoes file so i can play unity engine game?

I have no idea what you downloaded. Visit:

and download the web player installer. Once that has downloaded, you should have an exe file on disk. Run that and the web player will install.