My iPhone 3G won't reconnect when plugged into iTunes?

So I accidentally disabled my iPhone, right? It says to plug into iTunes to reconnect. I plugged it in to an iTunes user which isn't registered with the phone (the old computer crashed), but I thought it would still work. When I plugged it in, iTunes came up with a box saying "You must enter password before connecting with iTunes." But the screen of my phone still says "Connect to iTunes." Incredibly obnoxious. Any clue what to do?

Easy fix put your iPhone into DFU Mode
look it up on youtube it's not hard.
basically you have to press the power button for 5 seconds
then while holding the power button hold also the home button without releasing the power button for 15 seconds.
then let go of the power button but still hold the home button for another 10 seconds. Then iTunes will say that your iPhone is in DFU mode and that you'll have to restore.

After that just follow the instruction in iTunes!

if you don't understand my instruction clearly go on youtube and search dfu mode it's not hard!