thanks for the reply mate! the first and the second parts that u explained are working fine for me!
this is how my new code looks like!
string constr = "User Id = scott;Password=tiger;Provider=Msdaora.1";
OleDbConnection con = new OleDbConnection(constr);
MessageBox.Show(" Connected to ORACLE!");
string g = textBox1.Text;
string q = "create table " +g+ "(enum number,ename varchar2(10),sal number)";
OleDbCommand cmd = new OleDbCommand(q, con);