Steps to solve the "file is too large for destination file system."

These directions don't work to solve this problem because I cannot "right click on command prompt." I don't see how to do that following the "click System Tools" step.  What should I be looking for? Nothing I click on brings up the "run as adminstrator" option. HELP!!

Let’s try converting the drive to a NTFS and NoSecurity setting. This can be done by:

·         Click the Start Orb

·         Click All Programs

·         Click Accessories

·         Click System Tools

·         Right click Command Prompt

·         Click Run as Administrator

·         Enter the command, convert <drive> /fs:ntfs /nosecurity (<drive should be the drive letter of your external hard drive, for example convert F: /fs:ntfs /nosecurity )