how to install an unformatted hard drive to laptop?

the laptop is a dell 600m.
I bought a new (unformatted) seagate 160 hard drive & placed it in the drive bay.

i looked with a flash lite into that bay & it seems that the pins will not reach
the socket. what is there to this laptop that prevents the drive from connecting?
the BIOS does not recognize the drive.
I put the seagate tools cd-rom in cd-rom drive to run that program to format the drive.
But the cd-rom will not run. there is no OS, as no drive.
I'm thinking of selling this laptop & returning the drive to Newegg as I am at a loss
as to how to install a drive.
I am not familiar with laptop upgrades.
For instance, does the drive fit into some kind of carriage that then slips into the bay?

Thanks, Jim
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most laptops have an adapter to make an HD interface with the laptop hardware. Did you happen to notice this on the old drive? (I'm assuming you're replacing an HD?)

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What kind of the drive you bought, Sata or Ide? Your system accepts IDE type, and there is a adapter as well. When you remove the old drive, remove that adapter out and install on new drive, insert into hard drive bay. 
jamesg1940Author Commented:
Thanks. Used lap[top came with no drive OR ADAPTER. I'll inquire re. cost of adapter. That Dell schematic shows no adapter part. Buying a part means I have to speak Hindustani. I'll give it a try. Desktops r so much easier.
jamesg1940Author Commented:
You saved me the grief & failure of just unloading this laptop cheap on Ebay.

I called Dell parts & received your email response re. the link to purchase part.
You guessed correctly: the Hindu rep. put me on hold for 5 mins. then said I did not need to order an adapter, just slide the HD into the slot. I told her 3 times that was not the solution. Oh well Dell support sucks.
I just hung up & ordered that part from the link u provided.

E-E is worth more than the fee I pay.
Next time I'll ask of you more patient questions  & assign more points to the Expert.
I got depressed  too easily with the challenge to get that laptop running.
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