I followed this guide: http://legacy.tonyma...p?f=170&t=26283
Only problem is, Chameleon won't continue after I select which partition I want to boot from.
I figured that the process for Mountain Lion would be about the same as it is for Lion (I don't have a copy of Lion).
I tried selecting Lion_USB from the menu, but then it just goes to a gray screen and reboots. I tried with the suggested flags ("arch=i386 -x -v"), and that spat out very little text and jumped back to the menu. I tried with just "-x -v", and then it loaded all the appropriate kexts, got a bit past "Restart fix applied" (that's as far as I was able to read) and rebooted.
I feel bad for letting my previous post die, especially since I was being helped (thanks eep357!), but I guess I just got swamped with work (yay college).
I have my doubts as to whether it will work though, considering it's made for Gigabyte motherboards, and this Dell laptop is hardly that.
EDIT: SOLVED! DSDT patched by LatinMcG: http://www.insanelym...0/#entry1886726
Booted properly with a new copy of Lion (not ML) and the "-v" flag.
Dell Inspiron 1520
Intel Core 2 Duo T7500 2.4 GHz
nVidia NB8P-GS (I think that's a GeForce 8600M)
2 GB RAM
Thanks in advance for any help!