You shouldn't have any problem using an external USB hard drive with your 1150 laptop. The only proviso is that your external hard drive should have its own external power supply as the USB ports on the 1150 will not be able to provide enough power to run that hard drive.

When you plug in your external hard drive you should see a balloon appearing near your clock telling you that Windows has found new hardware and installing it. After that is done, you will need to format your hard drive before it will be seen in Windows.

thankyou very much for your reply....