Here is the situation. 2 years ago I created a LAN in my home for gaming. It consisted of 4 computers networked using a Linksys Etherfast Wired Router with a 4-port switch. It worked great and all computers could play networked games as well as share other resources such as files, printers, internet, etc. Later I added a Linksys Etherfast Wired 8 port switch to the mix so when friends came over they could join in the gaming. That also worked very well and using this set-up we daily used 4 or more computers and played several network capable games such as StarCraft, Mechwarrior, Diablo II, etc. using the IPX protocols with no problems or glitches. I custom built each of the computers on my 4 computer LAN. Some of the specs are these: Computer 1-Pentium 4-2.8ghz-2gb ram-256mb nVidia video card-SoundBlaster Live sound card-Dlink PCI Ethernet card-XP Home Edition SP2, Computer 2-Same, Computer 3-Pentium 4-2.4ghz-1gb ram-128mb ATI video card-SoundBlaster Pro sound card-Dlink PCI Ethernet card-XP Home Edition SP2, Computer 4-AMD Athlon 1800+-1.4ghz-512mb ram-64mb nVidia video card-onboard sound-Dlink PCI Ethernet card-XP Home Edition SP2. This worked great for my entire network gaming and other needs with no problems. Recently I remarried and moved into a new home which is significantly bigger than my old home. My new wife did not want me to string network cables all through our new home so I decided to go wireless. I stuck with Linksys because it has served me so well in the past. I purchased a Linksys WRT54GX4 with SRX400 Wireless G Broadband Router/Switch/Access Point. I also purchased 3 Linksys WMP54GX with SRX Wireless G PCI cards. I hard wired Computer 1 to the Router since it was going to remain in the same room. Computer 2 received a wireless PCI card and at that point I tested the small 2 computer LAN and it worked fine. I was able to network StarCraft over the IPX and play with no problem. Computer 4 received the next wireless PCI card and instantly found the network and registered itself using the shared Internet connection and printed on the shared printer but when it came testing time with StarCraft I got the error message “Unable to Join Game”. It could see the game but not join it. If the game was created on Computer 4 then the other two computers on the network could not even see it. I did the forum search as well as checking Blizzard (makers of StarCraft) and Linksys web sites. I have tried all the tips I have found on these sites including switching to 802.3, creating the unique 8 digit IPX network Identifier, use of TCP/IP, turning off firewalls, NetBios, NetBui, etc. to no avail. None of these things did I have to do when it was a wired network. It always auto-detected the settings and worked perfectly. I am using the same version of StarCraft on all machines as I did when it was a wired network. My puzzle is it worked as a wired network on these 4 machines but it is not working as a wireless network. What am I missing? All 3 machines were set-up and configured the same and two work fine but the third does not. As a curiosity test I used an old laptop I had laying around with an old wireless card and it was able to network and game using StarCraft with the other two but not the third. In the next day or so I am going to add the Wireless PCI card into the last machine and see if it has the same problem or if it works error free. Meanwhile does anyone have any suggestions on what I can try or check to get the outcast computer to join my gaming loop? TIA, Lost.