New hard drive doest have same case as original, is it ok?

[pilotkid]

I bought a new hard drive for my macbook and the original has a silver case around it and it looks like its screwed (one screw on each corner) on to the hard drive. The new hard drive that I bought which is a seagate momentus 7200.1 100gb doest have the same case but it has the screw holes there for it, do I need to put the case from the original hd on to the new hd? The only thing I can see that the case does is it has that white pull tab on it to remove the hard drive from the computer.
Thanks

[WildCowboy]

Yes, put the new drive into the caddy before putting the whole thing back into your MacBook.

[pilotkid]

Yes, put the new drive into the caddy before putting the whole thing back into your MacBook.

ok thank you

[M@lew]

Yup don't forget to unscrew it. I almost shoved my HD in straight away when I first got it. Good thing I asked myself "how the hell does it come out since this one doesn't have a tag?" Then I realised what I had to do. :p

[heySparky]

ifixit.com (http://www.ifixit.com/Guide/Mac/MacBook/Hard-Drive/86/4) has excellent tutorials with photos for lots of things you can do to upgrade your Macbook, including changing out the hard drive.