User Login and Roles

Hello All
can any body have read an article or provide me help regarding user login authentication and roles defining in ASP.Net 1.1 .All articels that i have read talks about changing in web.config file. But will this will still do if my site is hosted by some body else.

Confusion is that i have my website hosted on some servers and previoulsly they used ASP classic now they have moved toward ASP.Net, so how do i go about the users role and login authentication if i want to change my login process and want to be in ASP.Net. Do i need to create web.config file there in the same directory where they have put my all other ASP classic files.

Can i put ASP and ASP.Net files in same directory and will migrate slowly by changing codes in ASP to ASP.Net gradually.. Is it possible ...

Please advice

If you're going to move, move it all. Don't be half-ASP and half-ASP.NET. There are some nightmares from what I remember, when we had to integrate an ASP with an ASP.NET app.

There are many forms of authentication in ASP.NET. Do a search on Asp.net authentication, and you'll have plenty of reading to do.