Hobby Issues

[Chief Pride]

i have been trying to create a simple circuit to make an LED sign, i have two resistors, a 100 Ohm and a 10 Ohm i will use them in series to make 110 Ohm, radioshack didnt have any 110's... I am trying to use a transformer out of a broken digital clock, and Blue LED's with a max forward voltage of 3.7, i am reading 6.5 AC volts on my multimeter, however no DC voltage... which isnt a big deal becuase that just means that the LED's will blink super fast an no ones eye will notice... but here comes the wierd part, i looked up how to measure voltage with the multimeter in AC, it said i was supposed to break the circuit and complete the circuit with my multimeter, but i read the same voltage (6.5) with, or without the resistors, and the 6.5 voltage is burning my LED's out after about 18 hours....

any ideas what i am doing wrong? thank in advance