X config on a G3 iMac

[Jon Linnell <kobakira@gmail.com>]

Yo,
I'm trying to configure X, I'm using an iMac with the built-in  
monitor. when I 'dpkg-reconfigure xserver-xfree86' it asks me for the  
BusID of my monitor. On another tty, I used the 'lspci' command to  
find it, I converted it to decimal and used that, BUT, it won't let  
me (Incorrect format or something), It only lets me use a single  
digit. I've cycled through the config several times cycling through  
0-9 but it still says it can't find my screen!!! Any suggestions?