Arduino compatible board - USB bootloader!

Hey I am trying to make this on a bradboard, I flashed the bootloader and did the jumpering, when I connect to PC on WINXP, Unknown device is the message I get.

I tried to install the driver but as per documentation of USBasp loader, after just connecting usb I should get device name as "USBASP" and device driver installation fails....

My configuration is

ATMega8 - 16MHz and connections are as per metaboard schematics....

Can any one help me plzzzzz :-?