I'm looking to get a WPC54G for a laptop I got from a friend. However, I've noticed that the WPC54G comes in different version. I was wondering which should I get and how can I tell which version is which. I was thinking of getting it off of EBay so I need to know what to ask the seller so I will know which version they are selling. My current setup has 2 WRT54G's setup in WDS mode both running WPA-PSK. Thaks for the help.