I get the Lion Installer while I press Command+ R from Snow Leopard. My DVD installer (snow leopard) doesn't work

I own this Mackbook pro since 2011. Using Snow Leopard as OSx.

I get the Gray Screen of Death in the past and i (finally) solved by reinstalling the OSx from the DVD that came with my Mac.

Now, I get the same odious screen again and I tried to troubleshoot the Gray Screen of Detah by numerous workaround without sucess.

But this time I can't reinstall the Snow Leopard from my DVD.

So I start (again) my MBP by pressing CTRL+R and the iApple Icon was replaced momentally by a Earth icon (moving) while ask me for Network configuration.

Then the running bar complete after 10 minutes and I see the LION INSTALLER INSTALLER!!

BUT ... I dont use Lion Before, even I can't bought them previously. (Isn't offered in the Apple Store)

Then, I cant start from my Snow Leopard DVD I should install LION???

I dont have licence.

BUT I NEED TO START MY MacBook Pro Soon!!!

NOTE: I'm not afraid to move to LION because I already use it in my (other)iMac. My only concern is if this a valid way to get LION or use it to solve my actual problem.