need some help.

i am needing to know how to hook up leds to the front of the trap (the yellow ones) for the back led i have 4 AAA batt. a 2 ■■■■ toggle switch 1 blinking red led and a resistor. the guy at radio shack helped me out but i wat to run yellow blinking lights to the front off what i have. if it can be done. i dont want them to blink in a pattern or anything just blink will be fine for now. im not savvy in stuff like this so im not sure how to do it. do you have to have a resistor for each led or just one for all of them? any help would be awsome.

so the best i can figure is one resistor should be fine. but i would still like some info if you can help.