Installing osx from scratch, suspected wrong disks.

Hi all, just need some confirmation of my suspicions.
I bought a 2010 Macbook pro of a friend, he got it as a part ex last december, was £400 so a bargain.
Ive just bought a new hard drive to put it, installed it etc.
This is where the issues come.
I installed the disk he gave me with it goes past the select language page to then it comes up saying something like "Mac osx can not be installed on this machine", give me the option to use a backup.
I ejected the discs and they say they are for a 15 inch(mine is 13).
I also tried a retail copy and this gives the Kernal error thing.
I have tried on both the new and old drive and get the same results for both..

Would I be right to presume that the Macbook disk will not work as its not the specific disk for the machine and the retail wont as its too old?

 

So a brand new retail copy of Snow leopard should work?.
The copy I have was from when it very first got released.

 

Gotya.
I'm going to try and clone the old drive but i'll certainly be getting another.

Thanks to you both.

 

Well that was easy.
25 minutes on hold to Apple but a bit of flirting with the girl on the phone and she's sending me some new disks which will be here next week.

 

Haha no.
I guess they have little value due to being machine specific, I have bought and registered a load of Apple gear in the last 10 years though so I guess that helps.

Unfortunately I dont think she was in the same country. Really sexy accent though and she'd of laughed if id of said "foot".