Please, help me anyone!!!

1) I'm using USB Loader GX 2.2c & loading games from HDD connected to the 1st USB port. I can't use the 2nd port for anything else especially my wired mic. So I can't play any karaoke games. How do I resolve this?

2) I can't play Guitar Hero 5 or Band Hero. Every time I load them, i'll get a black screen.

I'd really appreciate it if anyone could give me step-by-step tutorials to change the settings, update the cios, etc.