I have bought a new "KTECH 558 2 MEGAPIXEL PDA SMARTPHONE". But the software driver is not shipped with the product. I am able to connect it to my PC for mass storage and also able to use it as a webcam. But the problem is that I am unable to use it as a modem because when i tried it says configuring COM port and my PC is looking for suitable driver. I am using WinXP. Please help.

Thanks in advance