Then it's a bit more of a crap shoot.
Why? Because there is no mandate to include Windows Mail in 7. The maker of the laptop has every right to omit this app because including it could mean they need to support it. Yup, that's in da' OEM license or rules.
You can try the following to enable Mail then copy the mail store over.
1. A repeat of where the mail store is at:
2. Try enabling Windows Mail in 7:
I know it's unpopular but you may want to forget Microsoft's free email software. If you've been around, they seem to forget folk want to move to other machines. That is, look at the procedures to move email and you find nothing that anyone would like to do.