Hi, I'm a newbie here, and also in PHP.

Sorry for my bad English. I've walked around to find the answer of my problem, but I still can't get it.

I develop PHP 5.2.5 Application, using SQL Server 2005 database, and run in IIS 6.0.
I also use PHP SQL Server 2005 driver provides by microsoft.
My database is placed in another server.
My application is used by almost 30-40 users at the same time.
If the...