my father just implemented a wireless router in our house network thus forcing me to purchase a wireless network card. i bought the d-link DWL-G122 AirPlus G 802.11g/2.4Ghz. On installing the network card, i found that my connection has become extremely slow, prone to frequent ping spikes, and often slows down to the point where the internet stops working completely. Upon further inspection of my computer hardware, i find that i have a usb 1.2 port. is this source of slow activity? should i upgrade to a usb 2.0 port? if so, could somebody recommend a good, yet affordable port card? thanks