Unibody MacBook Pro will not re-install Leopard

Here's hoping that one of you clever people here can help me...
I was having some really sticky problems with my Leopard (failing permissions checks, problems resuming from sleep etc) and I could't fix it. I knew I had a recent backup on Time Capsule so I thought nothing of re-installing Leopard off the grey disk that the machine came with.
I have re-partitioned the disk to one clean, mac formatted partition and tried to a further erase and install to get Leopard up and running. However, the install process keeps failing every time. Generally it says the install just can't write to a directory and one time it said that the media was damaged.
I've really cleaned the disc and it doesnt look too bad to be fair and its only a few months old. Now, as a last resort (there is too much snow to get to an Apple store for a few days) I'm trying to install via Time Capsule, but even via Ethernet its going to take 5 hours so I thought I'd ask for some further advice from the clever people here. Any thoughts to get me back up and running without going to an Apple store would be great.

When you reformatted, under Volume Scheme you picked GUID partition?
Try the Apple Hardware Test. Disconnect all externals except power adapter.Put in the installer CD, Restart and hold the D key down. When AHT screen appears,select language,hit return. When the AHT main screen comes up follow instructions, take notes of any errors.After its done eject the cd and restart the installer and run
Disk Utility. That screen will also be after you select your language. At the top of the screen under Images Run the Verify. It will only work OS Extended (journaled)formatted volumes. Write down the errors if any show.

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