How to format my mac and install fresh copy of Snow Leopard

Hi guys,
When i bought my mac, it was coming with Mac OSX 10.5.6 Leopard.
I want to remove everything and start my mac from beginning again using Mac OSX 10.5.6 Snow Leopard directly. is it possible?
I already bought the Snow Leopard DVD.
Can i just directly re-install and format my mac using this Mac OSX 10.6 Snow Leopard DVD?
Or i need to format it first using old Mac OSX 10.5.6 DVD,then after that upgrade to Mac OSX 10.6?
Please help me guys..
Thanks a lot..

stew pit wrote:
Can i just directly re-install and format my mac using this Mac OSX 10.6 Snow >Leopard DVD?
Definitely yes.
I know that you know that there are two kind of installs for Leo: upgrade and erase and install. In principle, there would be little difference between the two. Many here say that upgrading, versus erasing and installing, is the superior procedure provided that one's prior installation is in very good condition. Others feel differently. I say just do what you prefer. My bet is that percentage-wise those getting good installs from an erase and install, particularly if all apps are reinstalled, rather than migrated, is higher than for upgrade--but probably not appreciably higher.
The processes leading to the final outcome should lead to a good outcome in either case. But, things can go wrong either way. I am not going to try to elaborate much on the specific ways that things could go wrong either way. But, for the most part, they would have to do with the way migration works and the migration technique used (if used), in the case of erase and install, and the existence of problems in the system existing prior to installation in the case of an upgrade.
To erase and install,
1. Start up from your Sno DVD, and start the installer.
2. Choose your language
3. Use the menus at the top of the next screen to start Disk Utility.
6. Erase your drive Mac extended (journaled).
7. Quit Disk Utility and continue your installation.
To do an upgrade install,
1. Start the installer from your Sno DVD either from your desktop or by starting up to the DVD.
2. Choose your language.
3. Continue your install.
Whichever kind of install you choose, you should be well backed up.

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