Re-instal Leopard and operating system

Hello
I have had my Macbook pro about a year for various reasons I may need to do a clean reinstall of my operating system. I apologize for not searching through the forums as I am sure the questions has already been asked. But how do I do it? I have my discs that came with my computer. Also I have time machine is it possible just to go back in time so to speak and re-set everything from there?
thanks very much
Troy

Extended Hard Drive Preparation
1. Boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger or Leopard.)
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Set the number of partitions from the drop down menu (use 1 partition unless you wish to make more.) Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID (only required for Intel Macs) then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
Steps 4-6 are optional but should be used on a drive that has never been formatted before, if the format type is not Mac OS Extended, if the partition scheme has been changed, or if a different operating system (not OS X) has been installed on the drive.
When formatting has completed quit DU and return to the installer. Now complete the OS X installation. You will have an opportunity to restore your system from a TM backup before reinstalling OS X. If you complete a basic system installation without restoring from TM, then upon completing the Setup Assistant you can migrate from a TM backup.
Booting From An OS X Installer Disc
1. Insert OS X Installer Disc into the optical drive.
2. Restart the computer.
3. Immediately after the chime press and hold down the "C" key.
4. Release the key when the spinning gear below the dark gray Apple logo appears.
5. Wait for installer to finish loading.
In the future we'd really appreciate you're taking the time to search the forums rather than apologizing for not taking the time to do so. This is especially true for questions such as yours which are basic and asked and answered hundreds of times. The Discussions also has a substantial collection of User Tips. Perhaps you will take the time, now, to click on the Help and Terms of Use link in the right sidebar of this page and read the Terms of Use.
Oh, and you might read the user manuals that came with your computer, and take advantage of the Help menu.

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Re-instal Leopard and operating system

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