Nokia :: N97 Mini Charger - Doesnt Work

I bought the phone about 3 weeks now, But here comes my next problem that is very close for me to actually throw it out of my apartment. The phone charger that comes with the phone DOESN'T WORK! It never worked from the start, and I had to use the USB charger from my computer to N97 Mini. Okay, so that may be a solution. However, I am travelling abroad for a conference soon. How am I suppose to bring my computer along with USB charger and everything if I was to travel light. For those people who is going ot suggest, try and plug the USB charger to other computer. Here is the problem. I've tried my entire office computers after office hour. ONLY 1 computer manage to charge for 1 hr before it 'automatically' disconnects. The rest only recognize the PC suit and Mass memory... but NOT the charging.