Help looking for a microphone headset with a 3.5mm jack?

I'm looking for a decent microphone headset with earphones on both sides, a mike included, and ONE 3.5mm jack for it - I want to use it for my laptop and my Blackberry.

Wal-Mart sells an HP model for $30 some dollars, but I can't find it online, and I'd like to pay less if possible.

Any leads are appreciated thank you -

Kegan