How can i measure voltages? The 3.3V in particular. i know u can measure the 5 and 12v from one of the plugs and a multimeter. neone know where i can put the multimeter leads to get a 3.3v reading?

Either the 6-pin AUX connector or at the main ATX connector. Just slip the probe between the wire and the plastic.

EDIT: are you using one of those Ultra PSU's? If so the only way to measure the 3.3v line with a multimeter is by modifying the atx connector so that you can slip the probe through the plastic.

Yea, i'm using an X-Connect. err I'm not gonna mess w/ that. i was just curious. thx for the help though. I was more worried about my 5V cuz MBM was measuring it at 4.24 but i think mbm is wrong cuz my multimeter is measuring 5.25. MBM also measures my 5V really low on my Antec True550. It's probably the sensor on the motherboard that MBM is reading from; its probably having issues lol. Again, thx for ur help though.

I took a closer look at your PSU and it does have the 6-pin AUX connector that nobody uses any more. Through this connector you can measure the 3.3v line.