My mac won't login

ok I can't get into my emac, i turn it on, and i login- have 2 accounts and am unable to get in using either one!?!
any help??
it loads my background and then won't go any further in, (just shows the spinning coloured mouse curser) I can use/move the mouse but i can't even open the disc drive, have over riden it and put teh hardware test cd in but nothing different happens when i restart..
so much work to do today as well!?! any help would be fantastic!!

Try resetting your PRAM and run fsck.
Reset PRAM:
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound (bong) for four times.
6. Release the keys.
Run fsck.
1. Reboot/Startup holding your Command-S key down.
2. At the command line type the following and hit 'Return.'
/sbin/fsck -fy
3. After it has check/repaired your disk, type 'reboot' and hit 'Return' again. Unit should bootup normally.
-Bmer
Mac Owners Support Group
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