Hello, little problem hope you can help. Dell 2300 XP OS Put new Hard Drive in loaded OS & drivers. MB has non intergraded LAN. So pci. LAN card. It came with a real teck. Did not find drvs. Installed new with driver. Sys. says card is there drivers loaded. Bottom icon row to right shows yellow triangle with (!) in it. It must be software or set up, I have tried all I no but I am hardware man. I rebuild these computers for Familys with kids that cant afford new computers and give them out on christmas Can you good poeple give me any ideas please