How to install 10.5.1 with DVD.

[shoresjustinlee]

I have a bought copy of Leopard 10.5.1 and would like to know if it is possible to install and if so, how to go about it. I have inserted the DVD in my drive and set BIOS to boot DVD first. The screen will be black with a "blinking dash" on the top left corner. Then the drive sounds like it is trying to read the disc. After about 30 seconds VISTA will boot and not sure why it doesn't even attempt to bring up the install page, even if it won't install. Could someone please help and let me know what I should do, if I can do something. Here is a list of my build. Also, before I tried to boot from DVD, I set my freespace on HDD to active and then tried to boot.

 

Here is a list of my HP's Specs.

 

CPU

Name: AMD Turion 64 X2 Mobile TL-60

Package: Socket S1(638)

Technology: 65nm

Family: F

Model: 8

Stepping: 2

Instructions: MMX(+), 3DNow!(+), SSE, SSE2, SSE3, X86-64

Frequency: 2000 MHz

HT Link: 800 MHz

Cores: 2

Threads: 2

 

Motherboard

Manufacturer: Quanta

Model: 30D1 85.24

Chipset: NVIDIA nForce 560 Rev. A2

Southbridge: NVIDIA nForce 560

BIOS Brand: Hewlett-Packard

BIOS Version: F.25

 

RAM

Manufacturer: Mosel

Type: DDR2

Size: 2048 MB

Channels: Dual

DRAM Frequency: 333.4 MHz

 

HDD

Manufacturer: Samsung

Capacity: 250GB

Interface: Serial ATA 1.5Gbps

 

Partitions

All are on DISK 0

Vista (C:) 149.95 GB NTFS

HP Recovery (D:) 11.91 GB NTFS

Unallocated 75.38 GB

 

OS

Windows Vista Home Premium