IMPORTANT Does it have charger or you must charge it over computer?

Does it have its own charger or you must use USB and charge it over computer?

It comes with a nice, short USB cable–it does not come with a charger.  You can charge it via your computer or any generic wall AC-USB charger, which you can buy separately at low cost–available at Amazon, eBay, electronics stores, etc.  Many cellphone chargers and GPS chargers will work with the Clip as well, as long as they have a mini-B 5-pin connection and are 5V and around 350 mA (better:  500 mA) and above. 

It comes with a nice, short USB cable–it does not come with a charger.  You can charge it via your computer or any generic wall AC-USB charger, which you can buy separately at low cost–available at Amazon, eBay, electronics stores, etc.  Many cellphone chargers and GPS chargers will work with the Clip as well, as long as, if they have a built-in USB cable, they have a mini-B 5-pin connection, and are 5V and around 350 mA (better:  500 mA) and above.

http://www.amazon.com/Palm-Original-Smart-Adapter-Charging/dp/B002ITKQKU is this one ok?

Answered in one of your other posts–best to only ask in one place.