Interbase 6.0 executeing SQL

you need the following objects on the form along with properties as suggested below

1. give yourself a button:

object Button1: TButton

2. drop an IBDatabase component on the form
 
object IBDatabase1: TIBDatabase
    Connected = True
    DatabaseName = 'D:\zz\Work\A21.GDB' //use your path
    Params.Strings = (
      'user_name=sysdba'  //use your login
      'password=somepassword') //use your password
    LoginPrompt = False
    SQLDialect = 1

3. drop and IBSQL component on the form:

object IBSQL1: TIBSQL
    Database = IBDatabase1
    ParamCheck = True
    SQL.Strings property
    SQL.Strings = (
      'CREATE TRIGGER PA_INSERT FOR PA '
      'ACTIVE BEFORE INSERT POSITION 0'
      'AS'
      'BEGIN'
      'NEW.TIMESTAMPS = GEN_ID(UID, 1);'
      'END'
      '')
    Transaction = IBTransaction1

4. finally and IBTransaction component:

  object IBTransaction1: TIBTransaction
    Active = True
    DefaultDatabase = IBDatabase1
  end

now using one of the onClick events do something similar to the code below:

procedure TForm1.Button1Click(Sender: TObject);
begin
  IBSQL1.ExecQuery;
  IBTransaction1.Commit;
end;

that's all. I verified this to work against IB6.
One last suggestion: do not use quotes around names of tables, fields in tables and other database objects in your SQL code.

for instance:
Wrong ---->>> :

CREATE TABLE "PA"
(
 "ID"     INTEGER NOT NULL,
 "PID"     INTEGER,
 "TIMESTAMPS"     INTEGER,
 "BS"     SMALLINT,
PRIMARY KEY ("ID")
);

Right ---->>> :
CREATE TABLE PA
(
 ID     INTEGER NOT NULL,
 PID     INTEGER,
 TIMESTAMPS     INTEGER,
 BS     SMALLINT,
PRIMARY KEY (ID)
);

Also, when creating a trigger which uses a generator, make sure you have created the generator first.

oh, and good luck !