Need help/info on buying Portable Speakers for Laptop.

[sheruken]

Yes Portable Speakers for Laptop! (USB or Direct Line out(whatever).. )
Basically, its okay if they are slightly BigAssed.. But Should be just like normal headphones / USB headphones.. No Power needed.
Quality is important / Portability not so important / NO PowerCord Needed, Very important.. / (dont mind uptill $100)
If anybody has used such speakers, please shed some info and light on it, and also advice on which ones to go for..