Formatted Mac Os X accidently. Now wont boot from disk or hard disk. Help!

Hello,
Last weekend I managed to stupidly and accidently wipe my mac os x part of the HD when it was meant to be for the partition I had freshly made for boot camp. Since the mac os x part of the HDD was formatted as NTFS, I now cannot boot to that and have been trying to get on to disk utility to sort this mess out... by booting to disk... problem is... it wont.
Long story short.
After insertng the Mac Os X Tiger install disk and holding C it does not force boot the disk and all I see is a grey folder icon with a question mark which flashes several then vanishes... I've tried inserting the disk and holding the Option key, and C... and also tried tapping both option keys fast to no avail... the cursor appears however when I do both and it then freezes and the screen stays white.
Tried phoning Apple tech UK to discover i'm out of applecare cover and it'll cost me £35 to get incident cover for this incident. She then said at the end,.... you just need to get to disk utility and sort it from ther... problem is.... I cant get there.
Apologies for the mini-rant... I've just tried every solution and I'm still at square1.
Thanks in advance..

+Any other suggestions?+
You didn't mention whether or not it still sounds the start-up chime when you try to boot.
Also, will it boot to the Apple Hardware Test (located on one of the grey-labeled original system discs) - hold down the d key instead of c key. Has it ever run the AHT prior to this problem?
Were you successful at performing a PRAM reset? Only this will cure the iMac of its propensity to search for the old startup disk. Had you ever done one prior to this problem? If you can do that and then immediately switch to holding the c or d key, it must force a boot. Since all you need is for it to boot, you should have no external device connected to your iMac.

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2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
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http://www.kenstone.net/fcp_homepage/partitioning_tiger.html
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Message was edited by: macbig

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https://discussions.apple.com/thread/3293948
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