Problem Saving Data

I am a Begginers in ASP programing, so I've been reading some tutorials and making some programs. The've been working son fine, until I begin working in database access, saving/retrieving data in reports.

I make a program to save data, and I call a friend that knows ASP and ASP.NET asking why I cannot save data in the tables if the programs does not vah errors, and he told me "You just have to go to the folder inside of the wwwroot, select properties->Web sharing" and share this folder putting write permisions". OH! this works very good, and I could save data in access table, and some reports.

A few days ago I tryied to do a form saving data in access table, but It doesn't work.
I tried the solution a friend of mine gived to me, but id doesn't work, I reinstalled IIS and it doesn't work neither.