i have a linksys G wireless card. when i configure the card, the place to enter a key is under a WEP area and there is no WPA listed. so would i have to download some firmware or anything or would the XP fix do the job or both? do i download the fix just on the wireless PC? i heard WEP slows down the network, does WPA also slow it down, or does it slow it down more or less?