problems installing leopard 10.5

I have an Imac intel core 2 duo running on osx 10.4

I am trying to upgrade to leopard 10.5. When I click on the icon to install leopard it prompts me to restart my computer and when I do- it restarts but nothing happens- not prompted to any more installation steps. If I click the icon again I am just given the option to restart.

any ideas?

-Dustin

What 10.5 Leopard DVD are you using? Black Retail DVD or Gray DVD that came with another Mac?

What color is your Leopard installation disk...grey/silver or black?

If it is grey/silver...is it meant for an Intel iMac (check the label)?

If not...these are model specific, and won't work on an iMac if it was meant for a different model computer.

HTH,

- Nick