About 1 month ago, i bought one WUSBGS, and i found it had so many problem, which i wrote in my previous post. After that, i decided to change to WMP54GS, and it worked for some time, and recently, it gave a lot of problems. Firstly, it was installed on one of my friend's PC, which has MSI mainboard with 2.8GHz CPU, and with W2K Pro SP4 installed. This piece of WMP54GS (FCC ID: PKW-WMP54V2), worked at so-so level since the day of installation. Sometimes, the connection dropped, and sometimes, no connection can be initialized. However, recently, it even can't have the connection being build up, or even the connection is built up, the connection is just dropped frequently. The PING results shows that the loss rate is more than 75% usually. Without knowing the exact reason, i tried on another friend's PC, which just has Asus mainboard with 1GHz CPU, and with W2K Pro SP4 installed. Unfortunately, this piece of WMPGS even can't be properly installed on the PC. It always shows that the PCI device cant' be installed with the proper driver. I tried to download the latest driver from Linksys FTP site, which the file name is WMP54GS_20050406.exe, but it could not resolve the problem either. Lastly, no choice, i tried on my own PC. Since my PC is near to the WRT54GS, i used wire previously. On my own PC, which has MSI mainboard and 2.4GHz CPU, with XP Pro SP1 installed, i could not get the device being installed as shown on the Linksys's manual. The funny thing is even the card could not be seen in the device manager after installing the latest driver, included in the WMP54GS_20050406.exe file. I am so confused by Linksys's GS series's adapters for desktops! Anyone encounter the similar problem before? Any workable scenario so far?