Reboot problems with iMac dual intel 1.83 OS 10.4.6

Needing help. Mac user since 1999 but I'm feeling like a novice with this. Wife was playing Sims 2 when it locked up and wouldn't allow the game to be turned off. Did a forced restart, disk went to the grey screen with the spinning gear for an extended period. Went to bed and the next morning the blue screen was on with OS X label as if computer was booting successfully but the hard drive sounded as if it was stuck in a loop. Got the installation disc and figured out how to eject the game and install the disc. Did safe boot and computer will goto the grey screen with the spinning gear and then will turn itself off.
Tried to reinstall OS X 10.4.4 while archiving in a separate folder and after verifying the disc the install fails. Ran hardware check came back o.k. Tried to boot from install disc and it just takes me back to the install disc start-up. Ran disc utility to repair premissions and it hung up after 30 minutes and the hard drive sounded like it was stuck in a loop. Ran disc utility to repair hard drive, first checks came back o.k. and then stated it was not completed due to an underlying issue when it tried to back out.
The hard drive is partitioned from boot camp, deleted windoze and tried to install OS X on the 20 gigs partitioned. The disc again verified but then failed- which threw me for a loop (does not appear dirty or scratched). My intention was to boot up on the partition and then try to retrieve pictures and videos on the hard disc, unfortunately only 1/2 is currently backed up.
I have not tried fsck yet because I was confused how to get to it, I think I am supposed to use the start up disc and go to the terminal application then enter the command, is this correct?
Unfortunately I am having to type this at work while the computer is at home- so if there are suggestions please dump them on me and I will try all of them tonight. No broken folders, kernal panics or exclamation points thus far.
Thanks for all the help.

Welcome to Apple Discussions!
When you verified with disk utility the disk, you basically ran fsck. Permissions are another factor here, but the fact it failed the disk check suggest major directory problems with the hard disk. Unfortunately the only third party directory repair utilities that I know work well currently are for PowerPC Macs only. If you have another Mac, suggest putting the iMac in target disk mode and see if it is seen by the other Mac. The target disk mode is described by this article:
http://docs.info.apple.com/article.html?artnum=58583
If it is, then you can recover your data.
If it is not, my suggestion is to get an external Firewire hard drive, and Prosoft Data Rescue and see if it is able to recover the information to it.
http://www.macsales.com/ sells equivalent Firewire hard drives for good prices, and http://www.prosofteng.com/ is where to get Data Rescue.
In addition, there may be suggestions people in the Boot Camp forum can offer:
http://discussions.apple.com/forum.jspa?forumID=1165
My suggestion is to find a way to completely and safely remove Boot Camp and only use it on non-production machines.
I don't think your problem is an online networking issue, which I see you posted in that forum.

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