How to translate an DBF app to a SQL app ?

Hi there,

I currently develop a network application under Delphi 2.01 C/S.
I'm using DBF files using the BDE 3.5 on a Novell Network 3.12 but i'is VERY

So I want to use a Sql server which is faster.
But I don't know what I need.

How to translate my DBF files into a SQL database ?
Do I need Borland Interbase (I already owe MS-SQL for Win NT 4.0) ?
Do I need to change a lot in my program source (I access tables through a DBF
alias) ?
What more ???

Thanks a lot for your advices.