SQL Database Connection Class Help Please.

hello there guys ...

Sorry to bother..
About 2 years ago, I was running a game server (Dekaron Ultra) ...

I was using MSSQL 2000 SP4 for the database...
I had a very nice program that Me and my Indian Best Friend developed together... He made a Database Connection Class for me LONG time ago (2009) But my HDD blew up...
My 2 TB Raid 0 setup blew up so I lost about 1.7 TB of data just recently...

I lost the source code too... :'(

Well...
What I am trying to do is:

1) I was wondering if some one could help me with a class, which would be compatible with the code below...
What happened was, I lost the source code, and the only thing was left was this text file... LOL...

 private void buttonLogin_Click(object sender, EventArgs e)
{
string password = textBoxPassword.Text;
if (SQLDataAccess.ValidateConnection("Account", password) == true)
{
SQLDataAccess.Password = password;
MessageBox.Show("Login Successful");
textBoxPassword.Text = "";
textBoxPassword.UseSystemPasswordChar = false;
{


FileStream fs = new FileStream
("log32.txt", FileMode.Append, FileAccess.Write);
StreamWriter sw = new StreamWriter(fs); sw.WriteLine(DateTime.Now); sw.Close();
} 

buttonLogin.Visible = false;
label1.Text = "Input Box";
}

else
{


MessageBox.Show("Login failed");
}

}

I am currently downloading SQL 2005, and I am going to load my old database to it, then I can try to connect...
But If some one could help me create a class (the above code was running off of SQLDataAccess ...

Thank you so much guys... I'm trying to get this on our Open Source c# Generator software...

Best regards..

Again, Thanks 1000x guys.

----------EDIT--------
My friend I mentioned above, is a hardcore c# programmer like you guys... I will see if he wants to join us here when he is back from India..
Again, Thanks guys.
----------EDIT--------
I really cant believe I lost this source code :'( ... Vinnoth is only comming back in a week, and my only solution was to bother you guys.
----------EDIT--------
I am really stuck in this problem :'(...