rEFIt doesn't see the Windows option

Hello there! Today, I've been trying to install Windows 7 through a bootable USB, but for the past hours, have been failing miserably. I downloaded rEFIt before, and all the options were there. Now with my bootable USB, rEFIt doesn't see Windows AND Linux, instead it just shows Mac OS and Legacy OS. I don't want to use any virtual machines or stuff, because it lags very much. Well, it's bearable, but when I try to play games, nope. I don't get the full experience from it. And even some games are starting to block out the virtual machines.

Sooo, can anyone help? It would be a miracle if someone knew how to fix this. Thanks! ^w^