Connect Sharepoint 2007 to SQL for authentification with login

[brice2212]

Hello ( I'm new on Sharepoint, and I don't speak english very well, sorry for my mistake)

I explain my problem
I have a web site(not sharepoint) with a SQL server 2005.
To acces to my website I have to enter login and password to have a profile.Login and password edit a profil wich allow to user to have some different right

I would like to integrate Sharepoint pages to my website

I would like to know if it's possible to :
Get back login and password from my web site for acces to sharepoint's page, and have the same profil for tue user.
Can I use SSO option for that ?

Thanks for your answer