Cant re-enable speakers

[TheSavior]

i had gotten a logitech usb headset recently and no audio would come out so i went to my sound in the control panel, then i went to enable the sound for the headset, but accidently disabled my default speakers(i have a dell xps 1730 laptop by the way)
and now i cant re enable my speakers its really annoying...

 

[LookinAround]

are you using XP or vista?

are you plugged into front panel jacks and/or rear panel?

 

[TheSavior]

im using vista but im not sure about the jacks thing and the speakers that arent working are built into the laptop

 

[LookinAround]

• Hadn't check your model (to realize was a laptop) but the question of front/rear jack doesn't apply to a laptop
• And especially now that say you're talking about integrated speakers (not external)

Did you try Control Panel->Hardware and Sound->Sound

- Should show you your choice of sound devices (i would guess including entries for both headsets and speakers)
- Select Speakers
- Click button to make it Default Device

/************ EDIT *********************/
And i recently came across this tool: Vista Audio Changer
If you try it, let me know how well/if it works for you