Trouble with OS X

I have an old G3 iMac snow which is running the original OS X not jaguar or anythign. I recently(couple months ago) tried to install mandrake linux on it but after a problem with not being able to get the screen size right on the install screen for hte linux i retardedly tried to do the instalation basically without seeing or being able to use my mouse or read the text. And well i got as far as the formating of the hard drive before i seriously messed up the computer. Now when i try to run OS X again i can get into the blue screen that says its loading everything but after that is done it just stays a blank blue screen and nothign else happens. I tried putting in the OS X install cd that came with it and the restore cd but nothign happened. What can i do to fix it. thanks a million

Nick

 

how can i format the hard drive without going into the operating system. Thanks yea i am thinking about it now

 

thanks im working on it now get back to u later

 

welll i tried it and it worked when i put the system restore cd in it formattted the hard drive and then it said to put the second restore cd in and when i did that it didnt recognize it so i tried a bunch of cds and none of them worked. I tried restarting it and it doesnt work now. All that comes up it a grey screen witht he old school mac on it and a spinning cursor in the top left corner.