A lot if the advice you are receiving is not going to help you. This is a forum dedicated for the Optimus s only. So we don't have the necessary information about the device you have to help. But this what I can offer. Know that because I don't have this device all advice I give is not tested and may further damage your device. The steps below are fairly standard across all devices, but you should be prepared and informed.
Does your phone have an sdcard? Do you have a computer you can plug the phone to via USB cable? You need to have some kind of rom file on your sdcard to fix anything. If not, track down something to put on it. Here is one rom I have found that "SHOULD" work for you if I have the right device in mind.
http://forum.xda-developers.com/showthread.php?t=1259739
Download that rom and gapps package (look for the 2 web links at the very top of the first post there) then load them onto you sdcard. From your clockwork mod recovery you need to perform a FULL wipe. Peform a factory reset, then under mounts and storage, format both system and boot. Now you need to install the rom and then the gapps package.