You won't get very far if you insult Steve. He is the chief contributor to these forums, and very knowledgeable, as you will see if you look at his contributions on other threads.
I suspect he has grown frustrated with you because you have ignored his requests to define your requirements clearly, including his suggestion that you define them using a table that defines your desired behaviour for all possible combinations of switch states.
I am going to give you one chance to be civil and forthcoming.
I've had a look at your schematic and your pictorial diagram. This is what I've figured out so far. Please correct anything I've got wrong.
S1. You are using either four AA batteries (4.8V or 6V depending whether they're rechargeable or primary cells) or a 9V PP3-type battery to power the first part of your circuit. I will call this the "first battery".
S2. There is a single-pole changeover toggle switch, and a pushbutton in series with the first battery. When the toggle switch is in one position, pressing the pushbutton will cause a red 12V light bulb to illuminate, but nothing more.
S3. When the toggle switch is in the other position, pressing the pushbutton will cause a green 12V light bulb to illuminate, and this is supposed to enable the laser.
S4. The laser is powered from two separate cells. I will call these the "second battery".
If I understand you properly, your problem is in enabling the laser when the green light is illuminated. The laser uses an independent supply and needs a closed contact to enable it.
If that's the case, a simple answer would be a relay. This is an electromechanical device that is activated by voltage applied to its coil. This voltage would be supplied from the first battery; you would connect the coil across the green light bulb. When the relay is energised, its contacts close, and complete a separate circuit involving the laser and the second battery.
Relays are available with 4.5V, 5V, 6V and 9V coils. They are also available with various current ratings for their contacts. Since you haven't told us how much current the laser draws from its batteries, and it's not clear what voltage the first battery is, I will point you to a number of relays that might fit your requirements, on the Digikey web site. These are in ascending price order.
Coil: 5V, 10 mA. Contact: 0.5A, reed.
http://www.digikey.com/product-detail/en/9007-05-00/306-1062-ND/301696
Coil: 5V, 5 mA. Contact: 0.5A, reed.
http://www.digikey.com/product-detail/en/9007-05-40/306-1251-ND/710440
Coil: 5V, 30 mA. Contact: 1A.
http://www.digikey.com/product-detail/en/G5V-1-DC5/Z773-ND/87831
Coil: 9V, 17 mA. Contact: 1A.
http://www.digikey.com/product-detail/en/G5V-1-DC9/Z2539-ND/369041
Coil: 6V, 25 mA. Contact: 1A.
http://www.digikey.com/product-detail/en/G5V-1-DC6/Z2538-ND/369040
Coil: 5V, 28 mA. Contact: 2A.
http://www.digikey.com/product-detail/en/V23079A2001B301/PB1059-ND/1210002
Coil: 4.5V, 31 mA. Contact: 2A.
http://www.digikey.com/product-detail/en/IM02TS/PB1093-ND/1633979
Coil: 6V, 23 mA. Contact: 2A.
http://www.digikey.com/product-detail/en/IM04TS/PB1095-ND/1633981
Coil: 9V, 22 mA. Contact: 2A.
http://www.digikey.com/product-detail/en/DS2Y-S-DC9V/255-2202-ND/647384
Coil: 9V, 16 mA. Contact: 2A.
http://www.digikey.com/product-detail/en/TX2-9V/255-2291-5-ND/649608
Coil: 9V, 6 mA. Contact: 1A.
http://www.digikey.com/product-detail/en/TXS2-9V/255-2336-5-ND/650135
The first two items are reed relays. These are physically compact, as well as cheap, but are not designed to switch heavy loads.
The relay coil voltage needs to roughly match the voltage of the first battery.
The relay contact rated current needs to be greater than the amount of current drawn by the laser from the second battery.
The significance of the coil current is not great. A lower current means that less energy is drawn from the first battery while the laser is firing. But the amount of current drawn by the green light bulb may be much greater than the coil current, and, I assume, the laser is not fired for very long periods of time, so the relay coil current may not be an important factor.
If this isn't enough to solve your problem, explain why, and give FULL and CLEAR answers to ALL of the following questions.
Q1. What is the story with the different voltages? Is the first battery 4.8V, 6V, or 9V? Are the bulbs 12V?
Q2. Is the pushbutton (that's in series with the first battery) a momentary type?
Q3. Is the laser supposed to fire immediately and continuously while the pushbutton is pressed, assuming the toggle switch is in the right position? Or is there a separate pushbutton or switch for the laser that needs to be operated in conjunction with the main pushbutton?
Q4. How much current does the laser draw from its batteries?
Q5. How much current do the red and green bulbs draw from the battery you intend to use?
Q6. Why are you using a separate battery for the light bulbs? It would be simpler to use the second battery for both functions.