Using My HP Laptop in the US with a different Voltage (Bought it here in Australia)

Hi there,

Just a quick question. I'm concerned about voltage differences between Australia and the US. I need to take my laptop overseas to use. Can I use a simple adapter to change the differences with the plugs. Or will I need to purchase a voltage converter since it runs on 240 Volts in Australia and 110 volts in the US?

I just don't want to fry my laptop!

Thanks