Set up USB Headphones in Windows Vista

With your USB Headphones plugged into an available USB port.
Right click the speaker icon in the system tray - by default located on the bottom right of your display.
Choose Playback Devices. Right click the headset and then click the Set as Default button.

If you play games on your computer, the game or other program that uses sounds may reset your default sound device back to your speakers - so you may have to periodically go back in and re-set up the default sound device.

Headphones that plug into your sound card via the round connections are sometimes more user friendly, (depending on your situation) but if you are using the headphones for a phone, you will have to use your microphone input and your speaker output.

If your computer is on the floor and you don't want to crawl in the back, AND you have
USB connectors in the front of your computer, then in that case, the USB headphones may be more user friendly for you in the physical realm, but you will
have to deal with enabling and disabling them and re-enabling them through Windows, if you play a game or some other program changes the default device.
Like many computer issues, your experience may vary.

Securely Delete Sensitive Files from your computer

Eraser is a free advanced security tool for Windows.
Do you have sensitive personal data on your computer that you want to fully erase?

When you delete files from your hard drive they are not fully deleted, the space is just marked to tell Windows that the space can be overwritten.
With a program like Eraser you can Fully delete your sensitive data.

You can download Eraser for free from MajorGeeks a great trusted site for downloading Freeware and shareware programs.

You can visit the authors site here

Reminder: CCleaner a freeware application that deletes temporary files, which can free up hard-drive space and more, has a secure erasing feature - and can be found at
MajorGeeks

A paid for version for removing unwanted security-sensitive data is
Norton Utilities
Norton Utilities currently costs about $60.00
It includes other utilities like disk fragmenter, start up control and more.
You can also find these Utilities free when downloaded separately.
Check out MajorGeeks or other reputable freeware / shareware download sites.

Other products that erase hard-drive data.
Warning
These are for when you want to sell or get rid of you computer - as they will fully Erase your hard-drive.

Free versions:
Eraser- download from MajorGeeks

DBAN - Darkis Boot and Nuke - download from MajorGeeks

The ones below are paid versions of eraser software:

KillDisk
Killdisk currently is about $60.00

DriveScrubber
Currently DriveScrubber is about $20.00 a year.

More info than you wanted perhaps (or not) bottom line you can securely delete sensitive data.