New Hard Drive Not Showing Up in Disk Utilities

Hi all,
So a few days ago my hard drive failed on me completely. And I didn't back up before that.
Yeah.
I bought a WD Scorpio Blue SATA 320 GB / 8 MB Cache / 5400 RPM internal hard drive and installed it myself in my 13" MacBook Pro (2009 I think). Model number of the HD is WDBABC3200ANC-NRSN.
After installing the hard drive, I turned on the laptop and put my Snow Leopard install disc into the computer. It took me to the Mac OS X installer and I went into Utilities / Disk Utilities. Here, however, my new hard drive isn't showing up.
What do I need to do to make this laptop recognize it has a new hard drive? I'm pretty sure I installed the hard drive correctly. Any thoughts?
Thanks a ton! ^_^

make sure it is selected as the startup disc. system preferences>startup disc> make sure new hdd is the default startup disc.

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New hard drive not showing up in disk utility

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This procedure is a diagnostic test. It makes no changes to your data.
Please triple-click anywhere in the line below on this page to select it:
ls -@Oaen /V* | pbcopy
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window by pressing the key combination command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting.
Wait for a new line ending in a dollar sign ($) to appear below what you entered.
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Machine Model: PowerMac7,2
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Hi! The problem is that the drive cannot show up on the desktop until it is formatted. Read THIS on formatting. Once formatted the S.M.A.R.T. status will probably work. Tom

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New Hard Drive Not Showing Up in Disk Utilities

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