help...my usb ports are not working...how?? wat should i do?

Is this a new problem? Were things working OK previously? Any new hardware and or software?

If this is a new problem try a System Restore to a point prior to the problem:

start > All Programs > Accessories > System Tools > System Restore

Also check your Device Manager: Start/Run/ devmgmt.msc

Click the + next to Universal Serial Bus controllers

Any yellow exclamation marks?