Black screen after installing tony nvidia patch

[nube]

Hey guys, so i was happy with my 9500gt running everything but today i bought a ECS 430GT, i put it in, and boot into sno leo, of course it kernel panic, so i entered by disabling the 9500gt driver then i installed the tony nivida patch hoping it would just make the 430 gt work i rebooted and it just made the screen go black after the grey boot screen logo. I tried different commands but none seems to work to at least try to enter again. How can i fix this guys? A funny thing, when i did check system graphics device it still showed me 9500gt i guess i didn't remove it but im not sure what to do now. I can have access to files on the HDD cause of macdrive. Any help will be much apretiated.