HELP! Can't boot 10.2 anymore. Goes into console.

I brought my laptop along to do some work. I have Diablotin installed and inadvertently changed an extension option; I think I disabled 'secruity' module or something. Anyhow, X boots all the way except of a GUI login, all I get is a console which says
DARWIN/BSD
login:

I can log in with my user name and password, but how do I get the GUI????

I tried typing 'exit' and the console does exit and I get a blue screen resembling X booting, but then it goes straight back into console.

Any ideas? I don't have my X disks here....Thanks.

Thanks for the reply. Unfortunately, I'm away from home and do not have any disks with me. I simply disabled a system extension (I know X doesn't have extensions like 9, but IIRC diablotin calls them extensions..) from loading it seems. I just need to know how to re-enable it from command line.

Arghh.....

anyone?

I tried booting with shift for safe mode.....no go.

Tried 'sudo SystemStarter'. no go.

Got the answer from the author himself.

Once you login, type this:

cd "/System/Library/StartupItems (Disabled)" [return]
ls -l [return]

If you disabled the Security Server, then you should have a line
mentioning:

drwxr-xr-x 5 root wheel 170 Jul 28 04:59 SecurityServer/

If it's the case, then type:

sudo mv SecurityServer ../StartupItems [return]

You will be prompted for your password, enter it and then type:

cd "/System/Library/StartupItems" [return]
ls -l [return]

If the line:

drwxr-xr-x 5 root wheel 170 Jul 28 04:59 SecurityServer/

appears then you can reboot using:

sudo shutdown -h now [return]