Boot Camp Assistant couldn't partition the drive

Hi everyone,
I recently deleted my windows partition, and wanted to create a new one, however, boot camp assistant told me that I couldn't (I do not know the exact wording). Boot camp assistant said to save my mac drive as an image, reformat my hard drive, and restore the image using disk utility.
SO, I tried to, but something went wrong, because the disc image I have will not mount....
In disk utility, I created an image of Macintosh HD, but I'm thinking I should have created an image of my hard drive "320.07 GB WDC3200..."
Can anyone confirm this?
Also, if anyone knows how I can view the files in my dmg that I created, that would be great.
The message I get with disk utility is: Unable to attach "Macintosh HD.dmg" (No mountable file systems)
So I click okay, and verify the disk, and I get ALOT of incorrect block counts (should be 1001 instead of 1020220) for example..
After checking multi-linked files and such, disk utility tells me to "repair disk" But I cannot mount the image, therefore I cannot repair it. I tried to repaid the DMG itself, but nothing happens.
Any info would be awesome.

converted corrupt DMG to CDR with disk utility. Some data loss occurred, but I got the majority of my files back.

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