install 64 bit cd dvd driver issue

Dear All,
I have just built a new system on which I want to install Vista. The DVD boots, but when I want to install the OS, after pressing the 'Install now' button, the installation prompts me for a required CD/DVD drive. This does not make much sense to me as the installation was able to start from the DVD in the first place! System Specs: Dual Core P4 3.00 Ghz Asus P5LD2 Deluxe 1 GB DDR2 RAM Samsung 250 GB SATA HD LG 4167B DVD RAM How do I solve this issue?
Best regards,
Ralph

apologies for the number of posts, the system said the post was not sent, so i kept resending it :s Problem has been solved
"Ralph" wrote:

Dear All,
I have just built a new system on which I want to install Vista. The DVD boots, but when I want to install the OS, after pressing the 'Install now' button, the installation prompts me for a required CD/DVD drive. This does not make much sense to me as the installation was able to start from the DVD in the first place! System Specs: Dual Core P4 3.00 Ghz Asus P5LD2 Deluxe 1 GB DDR2 RAM Samsung 250 GB SATA HD LG 4167B DVD RAM How do I solve this issue?
Best regards,
Ralph