1. yes go to the fps file of the floor you want open it up with notepad find where is says texture0 textured0... and change the lines after that(dont forget to make backups)
2.yes you can go to fps creator directory (c:/program files/the game creators/fps creator) then go to texture bank (files/texturebank/user)then user put your textures there or anywhere else in the texture bank.then while making your game put in a character and right click on him and click on his texture click on the ... then go to your texture and slect it but make sure it is a dds file.
3.go to file right click on (build game). go to (level settings) click on (global script) then find (sky).
gmr1923