Windows users beware: Tuesday, April 8th is D-day for your XP operating system.

Microsoft is discontinuing support to the older program.

Experts say it's a major shift since this is still the operating system of choice for many people.

Users will no longer get security updates and fixes and cannot call Microsoft for technical support.

XP users have options.

You can check with Microsoft to see if your hardware can handle a new Windows system.

Upgrading to a new machine with a newer operating system is another option.

Otherwise, computer technicians say you'll have to be extra cautious to keep antivirus software updated to keep bugs off your computer.

Avoiding excessive Internet use will also keep your system less vulnerable.